Home / 15,754.23-21,741.19-8,680.66

Finding the Fourth Proportional to 15,754.23, 21,741.19 and 8,680.66

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Solution

The fourth proportional to 15,754.23, 21,741.19 and 8,680.66 is: 11,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,754.23 : 21,741.19 = 8,680.66 : x
  2. Step 2: Convert to fraction form
    15,754.23/21,741.19 = 8,680.66/x
  3. Step 3: Cross multiply
    15,754.23x = 21,741.19 × 8,680.66
  4. Step 4: Simplify right side
    15,754.23x = 188,727,878.39
  5. Step 5: Solve for x
    x = 188,727,878.39/15,754.23
  6. Step 6: Final answer
    x = 11,979.51

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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.