Home / 22,771.40-31,443.19-15,685.52

Finding the Fourth Proportional to 22,771.40, 31,443.19 and 15,685.52

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Solution

The fourth proportional to 22,771.40, 31,443.19 and 15,685.52 is: 21,658.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,771.40 : 31,443.19 = 15,685.52 : x
  2. Step 2: Convert to fraction form
    22,771.40/31,443.19 = 15,685.52/x
  3. Step 3: Cross multiply
    22,771.40x = 31,443.19 × 15,685.52
  4. Step 4: Simplify right side
    22,771.40x = 493,202,589.18
  5. Step 5: Solve for x
    x = 493,202,589.18/22,771.40
  6. Step 6: Final answer
    x = 21,658.87

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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.