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Finding the Fourth Proportional to 29,645.50, 40,905.76 and 18,316.84

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Solution

The fourth proportional to 29,645.50, 40,905.76 and 18,316.84 is: 25,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,645.50 : 40,905.76 = 18,316.84 : x
  2. Step 2: Convert to fraction form
    29,645.50/40,905.76 = 18,316.84/x
  3. Step 3: Cross multiply
    29,645.50x = 40,905.76 × 18,316.84
  4. Step 4: Simplify right side
    29,645.50x = 749,264,261.00
  5. Step 5: Solve for x
    x = 749,264,261.00/29,645.50
  6. Step 6: Final answer
    x = 25,274.13

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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.