Home / 20,876.82-28,793.25-18,353.58

Finding the Fourth Proportional to 20,876.82, 28,793.25 and 18,353.58

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Solution

The fourth proportional to 20,876.82, 28,793.25 and 18,353.58 is: 25,313.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.82 : 28,793.25 = 18,353.58 : x
  2. Step 2: Convert to fraction form
    20,876.82/28,793.25 = 18,353.58/x
  3. Step 3: Cross multiply
    20,876.82x = 28,793.25 × 18,353.58
  4. Step 4: Simplify right side
    20,876.82x = 528,459,217.34
  5. Step 5: Solve for x
    x = 528,459,217.34/20,876.82
  6. Step 6: Final answer
    x = 25,313.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.