Home / 22,679.39-31,298.24-13,728.53

Finding the Fourth Proportional to 22,679.39, 31,298.24 and 13,728.53

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Solution

The fourth proportional to 22,679.39, 31,298.24 and 13,728.53 is: 18,945.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,679.39 : 31,298.24 = 13,728.53 : x
  2. Step 2: Convert to fraction form
    22,679.39/31,298.24 = 13,728.53/x
  3. Step 3: Cross multiply
    22,679.39x = 31,298.24 × 13,728.53
  4. Step 4: Simplify right side
    22,679.39x = 429,678,758.14
  5. Step 5: Solve for x
    x = 429,678,758.14/22,679.39
  6. Step 6: Final answer
    x = 18,945.78

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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.