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Finding the Fourth Proportional to 17,139.72, 25,710.72 and 6,614.76

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Solution

The fourth proportional to 17,139.72, 25,710.72 and 6,614.76 is: 9,922.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.72 : 25,710.72 = 6,614.76 : x
  2. Step 2: Convert to fraction form
    17,139.72/25,710.72 = 6,614.76/x
  3. Step 3: Cross multiply
    17,139.72x = 25,710.72 × 6,614.76
  4. Step 4: Simplify right side
    17,139.72x = 170,070,242.23
  5. Step 5: Solve for x
    x = 170,070,242.23/17,139.72
  6. Step 6: Final answer
    x = 9,922.58

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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.