Home / 20,615.20-30,920.27-8,773.74

Finding the Fourth Proportional to 20,615.20, 30,920.27 and 8,773.74

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Solution

The fourth proportional to 20,615.20, 30,920.27 and 8,773.74 is: 13,159.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.20 : 30,920.27 = 8,773.74 : x
  2. Step 2: Convert to fraction form
    20,615.20/30,920.27 = 8,773.74/x
  3. Step 3: Cross multiply
    20,615.20x = 30,920.27 × 8,773.74
  4. Step 4: Simplify right side
    20,615.20x = 271,286,365.84
  5. Step 5: Solve for x
    x = 271,286,365.84/20,615.20
  6. Step 6: Final answer
    x = 13,159.53

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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.