Home / 12,519.88-17,277.48-7,215.76

Finding the Fourth Proportional to 12,519.88, 17,277.48 and 7,215.76

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Solution

The fourth proportional to 12,519.88, 17,277.48 and 7,215.76 is: 9,957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.88 : 17,277.48 = 7,215.76 : x
  2. Step 2: Convert to fraction form
    12,519.88/17,277.48 = 7,215.76/x
  3. Step 3: Cross multiply
    12,519.88x = 17,277.48 × 7,215.76
  4. Step 4: Simplify right side
    12,519.88x = 124,670,149.08
  5. Step 5: Solve for x
    x = 124,670,149.08/12,519.88
  6. Step 6: Final answer
    x = 9,957.78

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Similar ratio
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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.