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Finding the Fourth Proportional to 14,659.92, 21,990.96 and 8,089.20

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Solution

The fourth proportional to 14,659.92, 21,990.96 and 8,089.20 is: 12,134.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,659.92 : 21,990.96 = 8,089.20 : x
  2. Step 2: Convert to fraction form
    14,659.92/21,990.96 = 8,089.20/x
  3. Step 3: Cross multiply
    14,659.92x = 21,990.96 × 8,089.20
  4. Step 4: Simplify right side
    14,659.92x = 177,889,273.63
  5. Step 5: Solve for x
    x = 177,889,273.63/14,659.92
  6. Step 6: Final answer
    x = 12,134.40

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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.