Home / 20,141.10-30,211.65-18,585.90

Finding the Fourth Proportional to 20,141.10, 30,211.65 and 18,585.90

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Solution

The fourth proportional to 20,141.10, 30,211.65 and 18,585.90 is: 27,878.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.10 : 30,211.65 = 18,585.90 : x
  2. Step 2: Convert to fraction form
    20,141.10/30,211.65 = 18,585.90/x
  3. Step 3: Cross multiply
    20,141.10x = 30,211.65 × 18,585.90
  4. Step 4: Simplify right side
    20,141.10x = 561,510,705.74
  5. Step 5: Solve for x
    x = 561,510,705.74/20,141.10
  6. Step 6: Final answer
    x = 27,878.85

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.