Home / 28,489.59-42,743.03-20,185.61

Finding the Fourth Proportional to 28,489.59, 42,743.03 and 20,185.61

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Solution

The fourth proportional to 28,489.59, 42,743.03 and 20,185.61 is: 30,284.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.59 : 42,743.03 = 20,185.61 : x
  2. Step 2: Convert to fraction form
    28,489.59/42,743.03 = 20,185.61/x
  3. Step 3: Cross multiply
    28,489.59x = 42,743.03 × 20,185.61
  4. Step 4: Simplify right side
    28,489.59x = 862,793,819.16
  5. Step 5: Solve for x
    x = 862,793,819.16/28,489.59
  6. Step 6: Final answer
    x = 30,284.53

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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.