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Finding the Fourth Proportional to 25,607.68, 38,411.52 and 8,079.28

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Solution

The fourth proportional to 25,607.68, 38,411.52 and 8,079.28 is: 12,118.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,607.68 : 38,411.52 = 8,079.28 : x
  2. Step 2: Convert to fraction form
    25,607.68/38,411.52 = 8,079.28/x
  3. Step 3: Cross multiply
    25,607.68x = 38,411.52 × 8,079.28
  4. Step 4: Simplify right side
    25,607.68x = 310,337,425.31
  5. Step 5: Solve for x
    x = 310,337,425.31/25,607.68
  6. Step 6: Final answer
    x = 12,118.92

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Similar ratio
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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.