Home / 20,738.19-28,619.15-11,306.82

Finding the Fourth Proportional to 20,738.19, 28,619.15 and 11,306.82

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Solution

The fourth proportional to 20,738.19, 28,619.15 and 11,306.82 is: 15,603.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.19 : 28,619.15 = 11,306.82 : x
  2. Step 2: Convert to fraction form
    20,738.19/28,619.15 = 11,306.82/x
  3. Step 3: Cross multiply
    20,738.19x = 28,619.15 × 11,306.82
  4. Step 4: Simplify right side
    20,738.19x = 323,591,577.60
  5. Step 5: Solve for x
    x = 323,591,577.60/20,738.19
  6. Step 6: Final answer
    x = 15,603.66

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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.