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Finding the Fourth Proportional to 38,672.80, 57,994.80 and 15,294.40

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Solution

The fourth proportional to 38,672.80, 57,994.80 and 15,294.40 is: 22,935.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,672.80 : 57,994.80 = 15,294.40 : x
  2. Step 2: Convert to fraction form
    38,672.80/57,994.80 = 15,294.40/x
  3. Step 3: Cross multiply
    38,672.80x = 57,994.80 × 15,294.40
  4. Step 4: Simplify right side
    38,672.80x = 886,995,669.12
  5. Step 5: Solve for x
    x = 886,995,669.12/38,672.80
  6. Step 6: Final answer
    x = 22,935.91

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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.