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Finding the Fourth Proportional to 10,007.92, 15,032.64 and 7,942.48

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Solution

The fourth proportional to 10,007.92, 15,032.64 and 7,942.48 is: 11,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,007.92 : 15,032.64 = 7,942.48 : x
  2. Step 2: Convert to fraction form
    10,007.92/15,032.64 = 7,942.48/x
  3. Step 3: Cross multiply
    10,007.92x = 15,032.64 × 7,942.48
  4. Step 4: Simplify right side
    10,007.92x = 119,396,442.55
  5. Step 5: Solve for x
    x = 119,396,442.55/10,007.92
  6. Step 6: Final answer
    x = 11,930.20

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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.