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Finding the Fourth Proportional to 11,006.60, 16,509.90 and 9,192.20

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Solution

The fourth proportional to 11,006.60, 16,509.90 and 9,192.20 is: 13,788.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,006.60 : 16,509.90 = 9,192.20 : x
  2. Step 2: Convert to fraction form
    11,006.60/16,509.90 = 9,192.20/x
  3. Step 3: Cross multiply
    11,006.60x = 16,509.90 × 9,192.20
  4. Step 4: Simplify right side
    11,006.60x = 151,762,302.78
  5. Step 5: Solve for x
    x = 151,762,302.78/11,006.60
  6. Step 6: Final answer
    x = 13,788.30

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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.