Home / 25,126.98-37,691.28-12,640.19

Finding the Fourth Proportional to 25,126.98, 37,691.28 and 12,640.19

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Solution

The fourth proportional to 25,126.98, 37,691.28 and 12,640.19 is: 18,960.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,126.98 : 37,691.28 = 12,640.19 : x
  2. Step 2: Convert to fraction form
    25,126.98/37,691.28 = 12,640.19/x
  3. Step 3: Cross multiply
    25,126.98x = 37,691.28 × 12,640.19
  4. Step 4: Simplify right side
    25,126.98x = 476,424,940.54
  5. Step 5: Solve for x
    x = 476,424,940.54/25,126.98
  6. Step 6: Final answer
    x = 18,960.69

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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.