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Finding the Fourth Proportional to 11,129.63, 16,691.02 and 7,330.10

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Solution

The fourth proportional to 11,129.63, 16,691.02 and 7,330.10 is: 10,992.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.63 : 16,691.02 = 7,330.10 : x
  2. Step 2: Convert to fraction form
    11,129.63/16,691.02 = 7,330.10/x
  3. Step 3: Cross multiply
    11,129.63x = 16,691.02 × 7,330.10
  4. Step 4: Simplify right side
    11,129.63x = 122,346,743.92
  5. Step 5: Solve for x
    x = 122,346,743.92/11,129.63
  6. Step 6: Final answer
    x = 10,992.89

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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.