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Finding the Fourth Proportional to 38,807.80, 58,212.05 and 15,440.20

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Solution

The fourth proportional to 38,807.80, 58,212.05 and 15,440.20 is: 23,160.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,807.80 : 58,212.05 = 15,440.20 : x
  2. Step 2: Convert to fraction form
    38,807.80/58,212.05 = 15,440.20/x
  3. Step 3: Cross multiply
    38,807.80x = 58,212.05 × 15,440.20
  4. Step 4: Simplify right side
    38,807.80x = 898,805,694.41
  5. Step 5: Solve for x
    x = 898,805,694.41/38,807.80
  6. Step 6: Final answer
    x = 23,160.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.