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Finding the Fourth Proportional to 29,475.84, 40,672.80 and 18,151.20

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Solution

The fourth proportional to 29,475.84, 40,672.80 and 18,151.20 is: 25,046.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,475.84 : 40,672.80 = 18,151.20 : x
  2. Step 2: Convert to fraction form
    29,475.84/40,672.80 = 18,151.20/x
  3. Step 3: Cross multiply
    29,475.84x = 40,672.80 × 18,151.20
  4. Step 4: Simplify right side
    29,475.84x = 738,260,127.36
  5. Step 5: Solve for x
    x = 738,260,127.36/29,475.84
  6. Step 6: Final answer
    x = 25,046.28

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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.