Home / 20,150.40-30,225.60-16,869.90

Finding the Fourth Proportional to 20,150.40, 30,225.60 and 16,869.90

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Solution

The fourth proportional to 20,150.40, 30,225.60 and 16,869.90 is: 25,304.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,150.40 : 30,225.60 = 16,869.90 : x
  2. Step 2: Convert to fraction form
    20,150.40/30,225.60 = 16,869.90/x
  3. Step 3: Cross multiply
    20,150.40x = 30,225.60 × 16,869.90
  4. Step 4: Simplify right side
    20,150.40x = 509,902,849.44
  5. Step 5: Solve for x
    x = 509,902,849.44/20,150.40
  6. Step 6: Final answer
    x = 25,304.85

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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.