Home / 20,608.66-28,439.18-11,177.02

Finding the Fourth Proportional to 20,608.66, 28,439.18 and 11,177.02

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Solution

The fourth proportional to 20,608.66, 28,439.18 and 11,177.02 is: 15,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,608.66 : 28,439.18 = 11,177.02 : x
  2. Step 2: Convert to fraction form
    20,608.66/28,439.18 = 11,177.02/x
  3. Step 3: Cross multiply
    20,608.66x = 28,439.18 × 11,177.02
  4. Step 4: Simplify right side
    20,608.66x = 317,865,141.45
  5. Step 5: Solve for x
    x = 317,865,141.45/20,608.66
  6. Step 6: Final answer
    x = 15,423.87

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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.