Home / 20,876.96-31,346.67-18,074.46

Finding the Fourth Proportional to 20,876.96, 31,346.67 and 18,074.46

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Solution

The fourth proportional to 20,876.96, 31,346.67 and 18,074.46 is: 27,138.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.96 : 31,346.67 = 18,074.46 : x
  2. Step 2: Convert to fraction form
    20,876.96/31,346.67 = 18,074.46/x
  3. Step 3: Cross multiply
    20,876.96x = 31,346.67 × 18,074.46
  4. Step 4: Simplify right side
    20,876.96x = 566,573,931.13
  5. Step 5: Solve for x
    x = 566,573,931.13/20,876.96
  6. Step 6: Final answer
    x = 27,138.72

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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.