Home / 15,217.61-21,002.72-9,251.15

Finding the Fourth Proportional to 15,217.61, 21,002.72 and 9,251.15

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Solution

The fourth proportional to 15,217.61, 21,002.72 and 9,251.15 is: 12,768.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217.61 : 21,002.72 = 9,251.15 : x
  2. Step 2: Convert to fraction form
    15,217.61/21,002.72 = 9,251.15/x
  3. Step 3: Cross multiply
    15,217.61x = 21,002.72 × 9,251.15
  4. Step 4: Simplify right side
    15,217.61x = 194,299,319.38
  5. Step 5: Solve for x
    x = 194,299,319.38/15,217.61
  6. Step 6: Final answer
    x = 12,768.06

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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.