Home / 20,331.84-28,058.09-11,380.17

Finding the Fourth Proportional to 20,331.84, 28,058.09 and 11,380.17

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Solution

The fourth proportional to 20,331.84, 28,058.09 and 11,380.17 is: 15,704.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.84 : 28,058.09 = 11,380.17 : x
  2. Step 2: Convert to fraction form
    20,331.84/28,058.09 = 11,380.17/x
  3. Step 3: Cross multiply
    20,331.84x = 28,058.09 × 11,380.17
  4. Step 4: Simplify right side
    20,331.84x = 319,305,882.39
  5. Step 5: Solve for x
    x = 319,305,882.39/20,331.84
  6. Step 6: Final answer
    x = 15,704.72

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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.