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Finding the Fourth Proportional to 25,607.38, 38,411.06 and 7,139.38

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Solution

The fourth proportional to 25,607.38, 38,411.06 and 7,139.38 is: 10,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,607.38 : 38,411.06 = 7,139.38 : x
  2. Step 2: Convert to fraction form
    25,607.38/38,411.06 = 7,139.38/x
  3. Step 3: Cross multiply
    25,607.38x = 38,411.06 × 7,139.38
  4. Step 4: Simplify right side
    25,607.38x = 274,231,153.54
  5. Step 5: Solve for x
    x = 274,231,153.54/25,607.38
  6. Step 6: Final answer
    x = 10,709.07

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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.