Home / 12,520.44-17,278.38-7,488.36

Finding the Fourth Proportional to 12,520.44, 17,278.38 and 7,488.36

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Solution

The fourth proportional to 12,520.44, 17,278.38 and 7,488.36 is: 10,334.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.44 : 17,278.38 = 7,488.36 : x
  2. Step 2: Convert to fraction form
    12,520.44/17,278.38 = 7,488.36/x
  3. Step 3: Cross multiply
    12,520.44x = 17,278.38 × 7,488.36
  4. Step 4: Simplify right side
    12,520.44x = 129,386,729.66
  5. Step 5: Solve for x
    x = 129,386,729.66/12,520.44
  6. Step 6: Final answer
    x = 10,334.04

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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.