Home / 13,101.28-18,079.20-7,132.98

Finding the Fourth Proportional to 13,101.28, 18,079.20 and 7,132.98

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Solution

The fourth proportional to 13,101.28, 18,079.20 and 7,132.98 is: 9,843.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.28 : 18,079.20 = 7,132.98 : x
  2. Step 2: Convert to fraction form
    13,101.28/18,079.20 = 7,132.98/x
  3. Step 3: Cross multiply
    13,101.28x = 18,079.20 × 7,132.98
  4. Step 4: Simplify right side
    13,101.28x = 128,958,572.02
  5. Step 5: Solve for x
    x = 128,958,572.02/13,101.28
  6. Step 6: Final answer
    x = 9,843.20

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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.