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Finding the Fourth Proportional to 29,480.70, 40,614.17 and 20,512.78

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Solution

The fourth proportional to 29,480.70, 40,614.17 and 20,512.78 is: 28,259.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,480.70 : 40,614.17 = 20,512.78 : x
  2. Step 2: Convert to fraction form
    29,480.70/40,614.17 = 20,512.78/x
  3. Step 3: Cross multiply
    29,480.70x = 40,614.17 × 20,512.78
  4. Step 4: Simplify right side
    29,480.70x = 833,109,534.09
  5. Step 5: Solve for x
    x = 833,109,534.09/29,480.70
  6. Step 6: Final answer
    x = 28,259.49

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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.