Home / 20,022.18-27,630.95-11,638.68

Finding the Fourth Proportional to 20,022.18, 27,630.95 and 11,638.68

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Solution

The fourth proportional to 20,022.18, 27,630.95 and 11,638.68 is: 16,061.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,022.18 : 27,630.95 = 11,638.68 : x
  2. Step 2: Convert to fraction form
    20,022.18/27,630.95 = 11,638.68/x
  3. Step 3: Cross multiply
    20,022.18x = 27,630.95 × 11,638.68
  4. Step 4: Simplify right side
    20,022.18x = 321,587,726.95
  5. Step 5: Solve for x
    x = 321,587,726.95/20,022.18
  6. Step 6: Final answer
    x = 16,061.57

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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.