Home / 12,753.75-19,130.96-3,988.66

Finding the Fourth Proportional to 12,753.75, 19,130.96 and 3,988.66

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Solution

The fourth proportional to 12,753.75, 19,130.96 and 3,988.66 is: 5,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,753.75 : 19,130.96 = 3,988.66 : x
  2. Step 2: Convert to fraction form
    12,753.75/19,130.96 = 3,988.66/x
  3. Step 3: Cross multiply
    12,753.75x = 19,130.96 × 3,988.66
  4. Step 4: Simplify right side
    12,753.75x = 76,306,894.91
  5. Step 5: Solve for x
    x = 76,306,894.91/12,753.75
  6. Step 6: Final answer
    x = 5,983.10

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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.