Home / 20,179.20-30,272.85-6,140.10

Finding the Fourth Proportional to 20,179.20, 30,272.85 and 6,140.10

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Solution

The fourth proportional to 20,179.20, 30,272.85 and 6,140.10 is: 9,211.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,179.20 : 30,272.85 = 6,140.10 : x
  2. Step 2: Convert to fraction form
    20,179.20/30,272.85 = 6,140.10/x
  3. Step 3: Cross multiply
    20,179.20x = 30,272.85 × 6,140.10
  4. Step 4: Simplify right side
    20,179.20x = 185,878,326.29
  5. Step 5: Solve for x
    x = 185,878,326.29/20,179.20
  6. Step 6: Final answer
    x = 9,211.38

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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.