Home / 20,909.17-28,854.01-11,348.60

Finding the Fourth Proportional to 20,909.17, 28,854.01 and 11,348.60

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Solution

The fourth proportional to 20,909.17, 28,854.01 and 11,348.60 is: 15,660.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.17 : 28,854.01 = 11,348.60 : x
  2. Step 2: Convert to fraction form
    20,909.17/28,854.01 = 11,348.60/x
  3. Step 3: Cross multiply
    20,909.17x = 28,854.01 × 11,348.60
  4. Step 4: Simplify right side
    20,909.17x = 327,452,561.14
  5. Step 5: Solve for x
    x = 327,452,561.14/20,909.17
  6. Step 6: Final answer
    x = 15,660.72

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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.