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Finding the Fourth Proportional to 14,231.43, 19,641.33 and 7,944.21

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Solution

The fourth proportional to 14,231.43, 19,641.33 and 7,944.21 is: 10,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,231.43 : 19,641.33 = 7,944.21 : x
  2. Step 2: Convert to fraction form
    14,231.43/19,641.33 = 7,944.21/x
  3. Step 3: Cross multiply
    14,231.43x = 19,641.33 × 7,944.21
  4. Step 4: Simplify right side
    14,231.43x = 156,034,850.20
  5. Step 5: Solve for x
    x = 156,034,850.20/14,231.43
  6. Step 6: Final answer
    x = 10,964.10

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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.