Home / 20,770.19-28,665.33-11,695.84

Finding the Fourth Proportional to 20,770.19, 28,665.33 and 11,695.84

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Solution

The fourth proportional to 20,770.19, 28,665.33 and 11,695.84 is: 16,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.19 : 28,665.33 = 11,695.84 : x
  2. Step 2: Convert to fraction form
    20,770.19/28,665.33 = 11,695.84/x
  3. Step 3: Cross multiply
    20,770.19x = 28,665.33 × 11,695.84
  4. Step 4: Simplify right side
    20,770.19x = 335,265,158.95
  5. Step 5: Solve for x
    x = 335,265,158.95/20,770.19
  6. Step 6: Final answer
    x = 16,141.65

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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.