Home / 20,177.80-30,252.30-11,415.40

Finding the Fourth Proportional to 20,177.80, 30,252.30 and 11,415.40

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Solution

The fourth proportional to 20,177.80, 30,252.30 and 11,415.40 is: 17,114.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.80 : 30,252.30 = 11,415.40 : x
  2. Step 2: Convert to fraction form
    20,177.80/30,252.30 = 11,415.40/x
  3. Step 3: Cross multiply
    20,177.80x = 30,252.30 × 11,415.40
  4. Step 4: Simplify right side
    20,177.80x = 345,342,105.42
  5. Step 5: Solve for x
    x = 345,342,105.42/20,177.80
  6. Step 6: Final answer
    x = 17,114.95

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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.