Home / 20,121.10-30,152.85-14,814.70

Finding the Fourth Proportional to 20,121.10, 30,152.85 and 14,814.70

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Solution

The fourth proportional to 20,121.10, 30,152.85 and 14,814.70 is: 22,200.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.10 : 30,152.85 = 14,814.70 : x
  2. Step 2: Convert to fraction form
    20,121.10/30,152.85 = 14,814.70/x
  3. Step 3: Cross multiply
    20,121.10x = 30,152.85 × 14,814.70
  4. Step 4: Simplify right side
    20,121.10x = 446,705,426.90
  5. Step 5: Solve for x
    x = 446,705,426.90/20,121.10
  6. Step 6: Final answer
    x = 22,200.85

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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.