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Finding the Fourth Proportional to 29,402.28, 40,555.02 and 18,787.20

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Solution

The fourth proportional to 29,402.28, 40,555.02 and 18,787.20 is: 25,913.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,402.28 : 40,555.02 = 18,787.20 : x
  2. Step 2: Convert to fraction form
    29,402.28/40,555.02 = 18,787.20/x
  3. Step 3: Cross multiply
    29,402.28x = 40,555.02 × 18,787.20
  4. Step 4: Simplify right side
    29,402.28x = 761,915,271.74
  5. Step 5: Solve for x
    x = 761,915,271.74/29,402.28
  6. Step 6: Final answer
    x = 25,913.48

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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.