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Finding the Fourth Proportional to 11,073.70, 16,610.55 and 9,980.20

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Solution

The fourth proportional to 11,073.70, 16,610.55 and 9,980.20 is: 14,970.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,073.70 : 16,610.55 = 9,980.20 : x
  2. Step 2: Convert to fraction form
    11,073.70/16,610.55 = 9,980.20/x
  3. Step 3: Cross multiply
    11,073.70x = 16,610.55 × 9,980.20
  4. Step 4: Simplify right side
    11,073.70x = 165,776,611.11
  5. Step 5: Solve for x
    x = 165,776,611.11/11,073.70
  6. Step 6: Final answer
    x = 14,970.30

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Half scale
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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.