Home / 12,281.38-18,423.90-3,958.66

Finding the Fourth Proportional to 12,281.38, 18,423.90 and 3,958.66

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Solution

The fourth proportional to 12,281.38, 18,423.90 and 3,958.66 is: 5,938.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.38 : 18,423.90 = 3,958.66 : x
  2. Step 2: Convert to fraction form
    12,281.38/18,423.90 = 3,958.66/x
  3. Step 3: Cross multiply
    12,281.38x = 18,423.90 × 3,958.66
  4. Step 4: Simplify right side
    12,281.38x = 72,933,955.97
  5. Step 5: Solve for x
    x = 72,933,955.97/12,281.38
  6. Step 6: Final answer
    x = 5,938.58

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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.