Home / 20,610.24-28,442.16-11,178.80

Finding the Fourth Proportional to 20,610.24, 28,442.16 and 11,178.80

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Solution

The fourth proportional to 20,610.24, 28,442.16 and 11,178.80 is: 15,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.24 : 28,442.16 = 11,178.80 : x
  2. Step 2: Convert to fraction form
    20,610.24/28,442.16 = 11,178.80/x
  3. Step 3: Cross multiply
    20,610.24x = 28,442.16 × 11,178.80
  4. Step 4: Simplify right side
    20,610.24x = 317,949,218.21
  5. Step 5: Solve for x
    x = 317,949,218.21/20,610.24
  6. Step 6: Final answer
    x = 15,426.76

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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.