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Finding the Fourth Proportional to 12,747.67, 17,592.02 and 7,158.87

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Solution

The fourth proportional to 12,747.67, 17,592.02 and 7,158.87 is: 9,879.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.67 : 17,592.02 = 7,158.87 : x
  2. Step 2: Convert to fraction form
    12,747.67/17,592.02 = 7,158.87/x
  3. Step 3: Cross multiply
    12,747.67x = 17,592.02 × 7,158.87
  4. Step 4: Simplify right side
    12,747.67x = 125,938,984.22
  5. Step 5: Solve for x
    x = 125,938,984.22/12,747.67
  6. Step 6: Final answer
    x = 9,879.37

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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.