Home / 12,503.12-18,747.66-4,178.75

Finding the Fourth Proportional to 12,503.12, 18,747.66 and 4,178.75

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Solution

The fourth proportional to 12,503.12, 18,747.66 and 4,178.75 is: 6,265.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.12 : 18,747.66 = 4,178.75 : x
  2. Step 2: Convert to fraction form
    12,503.12/18,747.66 = 4,178.75/x
  3. Step 3: Cross multiply
    12,503.12x = 18,747.66 × 4,178.75
  4. Step 4: Simplify right side
    12,503.12x = 78,341,784.23
  5. Step 5: Solve for x
    x = 78,341,784.23/12,503.12
  6. Step 6: Final answer
    x = 6,265.78

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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.