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Finding the Fourth Proportional to 29,245.66, 40,377.49 and 20,765.57

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Solution

The fourth proportional to 29,245.66, 40,377.49 and 20,765.57 is: 28,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,245.66 : 40,377.49 = 20,765.57 : x
  2. Step 2: Convert to fraction form
    29,245.66/40,377.49 = 20,765.57/x
  3. Step 3: Cross multiply
    29,245.66x = 40,377.49 × 20,765.57
  4. Step 4: Simplify right side
    29,245.66x = 838,461,341.22
  5. Step 5: Solve for x
    x = 838,461,341.22/29,245.66
  6. Step 6: Final answer
    x = 28,669.60

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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.