Home / 15,002.29-20,702.61-8,287.78

Finding the Fourth Proportional to 15,002.29, 20,702.61 and 8,287.78

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Solution

The fourth proportional to 15,002.29, 20,702.61 and 8,287.78 is: 11,436.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.29 : 20,702.61 = 8,287.78 : x
  2. Step 2: Convert to fraction form
    15,002.29/20,702.61 = 8,287.78/x
  3. Step 3: Cross multiply
    15,002.29x = 20,702.61 × 8,287.78
  4. Step 4: Simplify right side
    15,002.29x = 171,578,677.11
  5. Step 5: Solve for x
    x = 171,578,677.11/15,002.29
  6. Step 6: Final answer
    x = 11,436.83

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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.