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Finding the Fourth Proportional to 12,590.72, 17,375.36 and 7,001.92

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Solution

The fourth proportional to 12,590.72, 17,375.36 and 7,001.92 is: 9,662.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.72 : 17,375.36 = 7,001.92 : x
  2. Step 2: Convert to fraction form
    12,590.72/17,375.36 = 7,001.92/x
  3. Step 3: Cross multiply
    12,590.72x = 17,375.36 × 7,001.92
  4. Step 4: Simplify right side
    12,590.72x = 121,660,880.69
  5. Step 5: Solve for x
    x = 121,660,880.69/12,590.72
  6. Step 6: Final answer
    x = 9,662.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.