Home / 12,871.01-19,306.71-5,079.75

Finding the Fourth Proportional to 12,871.01, 19,306.71 and 5,079.75

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Solution

The fourth proportional to 12,871.01, 19,306.71 and 5,079.75 is: 7,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.01 : 19,306.71 = 5,079.75 : x
  2. Step 2: Convert to fraction form
    12,871.01/19,306.71 = 5,079.75/x
  3. Step 3: Cross multiply
    12,871.01x = 19,306.71 × 5,079.75
  4. Step 4: Simplify right side
    12,871.01x = 98,073,260.12
  5. Step 5: Solve for x
    x = 98,073,260.12/12,871.01
  6. Step 6: Final answer
    x = 7,619.70

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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.