Home / 15,132.60-20,882.93-8,418.87

Finding the Fourth Proportional to 15,132.60, 20,882.93 and 8,418.87

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Solution

The fourth proportional to 15,132.60, 20,882.93 and 8,418.87 is: 11,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.60 : 20,882.93 = 8,418.87 : x
  2. Step 2: Convert to fraction form
    15,132.60/20,882.93 = 8,418.87/x
  3. Step 3: Cross multiply
    15,132.60x = 20,882.93 × 8,418.87
  4. Step 4: Simplify right side
    15,132.60x = 175,810,630.79
  5. Step 5: Solve for x
    x = 175,810,630.79/15,132.60
  6. Step 6: Final answer
    x = 11,618.01

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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.