Home / 20,422.15-28,182.57-11,469.66

Finding the Fourth Proportional to 20,422.15, 28,182.57 and 11,469.66

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Solution

The fourth proportional to 20,422.15, 28,182.57 and 11,469.66 is: 15,828.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.15 : 28,182.57 = 11,469.66 : x
  2. Step 2: Convert to fraction form
    20,422.15/28,182.57 = 11,469.66/x
  3. Step 3: Cross multiply
    20,422.15x = 28,182.57 × 11,469.66
  4. Step 4: Simplify right side
    20,422.15x = 323,244,438.48
  5. Step 5: Solve for x
    x = 323,244,438.48/20,422.15
  6. Step 6: Final answer
    x = 15,828.13

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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.