Home / 20,147.28-27,800.76-12,193.20

Finding the Fourth Proportional to 20,147.28, 27,800.76 and 12,193.20

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Solution

The fourth proportional to 20,147.28, 27,800.76 and 12,193.20 is: 16,825.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.28 : 27,800.76 = 12,193.20 : x
  2. Step 2: Convert to fraction form
    20,147.28/27,800.76 = 12,193.20/x
  3. Step 3: Cross multiply
    20,147.28x = 27,800.76 × 12,193.20
  4. Step 4: Simplify right side
    20,147.28x = 338,980,226.83
  5. Step 5: Solve for x
    x = 338,980,226.83/20,147.28
  6. Step 6: Final answer
    x = 16,825.11

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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.