Home / 13,302.32-19,959.28-7,139.12

Finding the Fourth Proportional to 13,302.32, 19,959.28 and 7,139.12

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Solution

The fourth proportional to 13,302.32, 19,959.28 and 7,139.12 is: 10,711.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,302.32 : 19,959.28 = 7,139.12 : x
  2. Step 2: Convert to fraction form
    13,302.32/19,959.28 = 7,139.12/x
  3. Step 3: Cross multiply
    13,302.32x = 19,959.28 × 7,139.12
  4. Step 4: Simplify right side
    13,302.32x = 142,491,695.03
  5. Step 5: Solve for x
    x = 142,491,695.03/13,302.32
  6. Step 6: Final answer
    x = 10,711.79

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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.