Home / 12,545.99-17,308.52-7,239.78

Finding the Fourth Proportional to 12,545.99, 17,308.52 and 7,239.78

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Solution

The fourth proportional to 12,545.99, 17,308.52 and 7,239.78 is: 9,988.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.99 : 17,308.52 = 7,239.78 : x
  2. Step 2: Convert to fraction form
    12,545.99/17,308.52 = 7,239.78/x
  3. Step 3: Cross multiply
    12,545.99x = 17,308.52 × 7,239.78
  4. Step 4: Simplify right side
    12,545.99x = 125,309,754.18
  5. Step 5: Solve for x
    x = 125,309,754.18/12,545.99
  6. Step 6: Final answer
    x = 9,988.04

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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.