Home / 17,139.12-25,711.26-5,291.92

Finding the Fourth Proportional to 17,139.12, 25,711.26 and 5,291.92

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Solution

The fourth proportional to 17,139.12, 25,711.26 and 5,291.92 is: 7,938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.12 : 25,711.26 = 5,291.92 : x
  2. Step 2: Convert to fraction form
    17,139.12/25,711.26 = 5,291.92/x
  3. Step 3: Cross multiply
    17,139.12x = 25,711.26 × 5,291.92
  4. Step 4: Simplify right side
    17,139.12x = 136,061,931.02
  5. Step 5: Solve for x
    x = 136,061,931.02/17,139.12
  6. Step 6: Final answer
    x = 7,938.68

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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.