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Finding the Fourth Proportional to 14,086.32, 21,129.48 and 5,766.48

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Solution

The fourth proportional to 14,086.32, 21,129.48 and 5,766.48 is: 8,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,086.32 : 21,129.48 = 5,766.48 : x
  2. Step 2: Convert to fraction form
    14,086.32/21,129.48 = 5,766.48/x
  3. Step 3: Cross multiply
    14,086.32x = 21,129.48 × 5,766.48
  4. Step 4: Simplify right side
    14,086.32x = 121,842,723.83
  5. Step 5: Solve for x
    x = 121,842,723.83/14,086.32
  6. Step 6: Final answer
    x = 8,649.72

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.