Home / 14,118.30-21,177.45-7,119.90

Finding the Fourth Proportional to 14,118.30, 21,177.45 and 7,119.90

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Solution

The fourth proportional to 14,118.30, 21,177.45 and 7,119.90 is: 10,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,118.30 : 21,177.45 = 7,119.90 : x
  2. Step 2: Convert to fraction form
    14,118.30/21,177.45 = 7,119.90/x
  3. Step 3: Cross multiply
    14,118.30x = 21,177.45 × 7,119.90
  4. Step 4: Simplify right side
    14,118.30x = 150,781,326.26
  5. Step 5: Solve for x
    x = 150,781,326.26/14,118.30
  6. Step 6: Final answer
    x = 10,679.85

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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.