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Finding the Fourth Proportional to 38,051.20, 57,073.20 and 13,088.80

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Solution

The fourth proportional to 38,051.20, 57,073.20 and 13,088.80 is: 19,631.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,051.20 : 57,073.20 = 13,088.80 : x
  2. Step 2: Convert to fraction form
    38,051.20/57,073.20 = 13,088.80/x
  3. Step 3: Cross multiply
    38,051.20x = 57,073.20 × 13,088.80
  4. Step 4: Simplify right side
    38,051.20x = 747,019,700.16
  5. Step 5: Solve for x
    x = 747,019,700.16/38,051.20
  6. Step 6: Final answer
    x = 19,631.96

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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.