Home / 15,695.26-21,657.17-8,979.62

Finding the Fourth Proportional to 15,695.26, 21,657.17 and 8,979.62

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Solution

The fourth proportional to 15,695.26, 21,657.17 and 8,979.62 is: 12,390.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.26 : 21,657.17 = 8,979.62 : x
  2. Step 2: Convert to fraction form
    15,695.26/21,657.17 = 8,979.62/x
  3. Step 3: Cross multiply
    15,695.26x = 21,657.17 × 8,979.62
  4. Step 4: Simplify right side
    15,695.26x = 194,473,084.91
  5. Step 5: Solve for x
    x = 194,473,084.91/15,695.26
  6. Step 6: Final answer
    x = 12,390.56

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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.