Home / 12,516.92-17,275.28-7,139.36

Finding the Fourth Proportional to 12,516.92, 17,275.28 and 7,139.36

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Solution

The fourth proportional to 12,516.92, 17,275.28 and 7,139.36 is: 9,853.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.92 : 17,275.28 = 7,139.36 : x
  2. Step 2: Convert to fraction form
    12,516.92/17,275.28 = 7,139.36/x
  3. Step 3: Cross multiply
    12,516.92x = 17,275.28 × 7,139.36
  4. Step 4: Simplify right side
    12,516.92x = 123,334,320.95
  5. Step 5: Solve for x
    x = 123,334,320.95/12,516.92
  6. Step 6: Final answer
    x = 9,853.41

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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.