Home / 15,754.27-21,740.96-8,680.70

Finding the Fourth Proportional to 15,754.27, 21,740.96 and 8,680.70

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Solution

The fourth proportional to 15,754.27, 21,740.96 and 8,680.70 is: 11,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,754.27 : 21,740.96 = 8,680.70 : x
  2. Step 2: Convert to fraction form
    15,754.27/21,740.96 = 8,680.70/x
  3. Step 3: Cross multiply
    15,754.27x = 21,740.96 × 8,680.70
  4. Step 4: Simplify right side
    15,754.27x = 188,726,751.47
  5. Step 5: Solve for x
    x = 188,726,751.47/15,754.27
  6. Step 6: Final answer
    x = 11,979.40

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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.