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Finding the Fourth Proportional to 29,205.80, 40,307.74 and 19,142.76

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Solution

The fourth proportional to 29,205.80, 40,307.74 and 19,142.76 is: 26,419.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,205.80 : 40,307.74 = 19,142.76 : x
  2. Step 2: Convert to fraction form
    29,205.80/40,307.74 = 19,142.76/x
  3. Step 3: Cross multiply
    29,205.80x = 40,307.74 × 19,142.76
  4. Step 4: Simplify right side
    29,205.80x = 771,601,392.96
  5. Step 5: Solve for x
    x = 771,601,392.96/29,205.80
  6. Step 6: Final answer
    x = 26,419.46

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Find fourth proportional to 14,602.90, 20,153.87 and 9,571.38
Half scale
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Double scale
Find fourth proportional to 29,206.80, 40,309.12 and 19,143.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.