Home / 28,932.10-43,387.35-20,140.90

Finding the Fourth Proportional to 28,932.10, 43,387.35 and 20,140.90

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Solution

The fourth proportional to 28,932.10, 43,387.35 and 20,140.90 is: 30,203.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,932.10 : 43,387.35 = 20,140.90 : x
  2. Step 2: Convert to fraction form
    28,932.10/43,387.35 = 20,140.90/x
  3. Step 3: Cross multiply
    28,932.10x = 43,387.35 × 20,140.90
  4. Step 4: Simplify right side
    28,932.10x = 873,860,277.62
  5. Step 5: Solve for x
    x = 873,860,277.62/28,932.10
  6. Step 6: Final answer
    x = 30,203.83

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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.