Home / 20,515.73-30,773.60-15,842.57

Finding the Fourth Proportional to 20,515.73, 30,773.60 and 15,842.57

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Solution

The fourth proportional to 20,515.73, 30,773.60 and 15,842.57 is: 23,763.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.73 : 30,773.60 = 15,842.57 : x
  2. Step 2: Convert to fraction form
    20,515.73/30,773.60 = 15,842.57/x
  3. Step 3: Cross multiply
    20,515.73x = 30,773.60 × 15,842.57
  4. Step 4: Simplify right side
    20,515.73x = 487,533,000.70
  5. Step 5: Solve for x
    x = 487,533,000.70/20,515.73
  6. Step 6: Final answer
    x = 23,763.86

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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.