Home / 28,499.07-42,757.26-20,195.15

Finding the Fourth Proportional to 28,499.07, 42,757.26 and 20,195.15

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Solution

The fourth proportional to 28,499.07, 42,757.26 and 20,195.15 is: 30,298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,499.07 : 42,757.26 = 20,195.15 : x
  2. Step 2: Convert to fraction form
    28,499.07/42,757.26 = 20,195.15/x
  3. Step 3: Cross multiply
    28,499.07x = 42,757.26 × 20,195.15
  4. Step 4: Simplify right side
    28,499.07x = 863,489,178.31
  5. Step 5: Solve for x
    x = 863,489,178.31/28,499.07
  6. Step 6: Final answer
    x = 30,298.85

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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.