Home / 12,188.76-18,281.05-3,866.92

Finding the Fourth Proportional to 12,188.76, 18,281.05 and 3,866.92

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Solution

The fourth proportional to 12,188.76, 18,281.05 and 3,866.92 is: 5,799.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.76 : 18,281.05 = 3,866.92 : x
  2. Step 2: Convert to fraction form
    12,188.76/18,281.05 = 3,866.92/x
  3. Step 3: Cross multiply
    12,188.76x = 18,281.05 × 3,866.92
  4. Step 4: Simplify right side
    12,188.76x = 70,691,378.30
  5. Step 5: Solve for x
    x = 70,691,378.30/12,188.76
  6. Step 6: Final answer
    x = 5,799.72

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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.