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Finding the Fourth Proportional to 10,999.60, 16,499.40 and 8,047.15

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Solution

The fourth proportional to 10,999.60, 16,499.40 and 8,047.15 is: 12,070.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.60 : 16,499.40 = 8,047.15 : x
  2. Step 2: Convert to fraction form
    10,999.60/16,499.40 = 8,047.15/x
  3. Step 3: Cross multiply
    10,999.60x = 16,499.40 × 8,047.15
  4. Step 4: Simplify right side
    10,999.60x = 132,773,146.71
  5. Step 5: Solve for x
    x = 132,773,146.71/10,999.60
  6. Step 6: Final answer
    x = 12,070.73

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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.