Home / 15,742.46-21,724.12-8,668.92

Finding the Fourth Proportional to 15,742.46, 21,724.12 and 8,668.92

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Solution

The fourth proportional to 15,742.46, 21,724.12 and 8,668.92 is: 11,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.46 : 21,724.12 = 8,668.92 : x
  2. Step 2: Convert to fraction form
    15,742.46/21,724.12 = 8,668.92/x
  3. Step 3: Cross multiply
    15,742.46x = 21,724.12 × 8,668.92
  4. Step 4: Simplify right side
    15,742.46x = 188,324,658.35
  5. Step 5: Solve for x
    x = 188,324,658.35/15,742.46
  6. Step 6: Final answer
    x = 11,962.85

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Double scale
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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.