Home / 15,497.07-21,382.41-8,781.15

Finding the Fourth Proportional to 15,497.07, 21,382.41 and 8,781.15

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Solution

The fourth proportional to 15,497.07, 21,382.41 and 8,781.15 is: 12,115.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.07 : 21,382.41 = 8,781.15 : x
  2. Step 2: Convert to fraction form
    15,497.07/21,382.41 = 8,781.15/x
  3. Step 3: Cross multiply
    15,497.07x = 21,382.41 × 8,781.15
  4. Step 4: Simplify right side
    15,497.07x = 187,762,149.57
  5. Step 5: Solve for x
    x = 187,762,149.57/15,497.07
  6. Step 6: Final answer
    x = 12,115.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.