Home / 20,166.20-30,177.30-12,774.20

Finding the Fourth Proportional to 20,166.20, 30,177.30 and 12,774.20

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Solution

The fourth proportional to 20,166.20, 30,177.30 and 12,774.20 is: 19,115.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,166.20 : 30,177.30 = 12,774.20 : x
  2. Step 2: Convert to fraction form
    20,166.20/30,177.30 = 12,774.20/x
  3. Step 3: Cross multiply
    20,166.20x = 30,177.30 × 12,774.20
  4. Step 4: Simplify right side
    20,166.20x = 385,490,865.66
  5. Step 5: Solve for x
    x = 385,490,865.66/20,166.20
  6. Step 6: Final answer
    x = 19,115.69

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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.