Home / 12,187.25-18,281.52-3,867.90

Finding the Fourth Proportional to 12,187.25, 18,281.52 and 3,867.90

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Solution

The fourth proportional to 12,187.25, 18,281.52 and 3,867.90 is: 5,802.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.25 : 18,281.52 = 3,867.90 : x
  2. Step 2: Convert to fraction form
    12,187.25/18,281.52 = 3,867.90/x
  3. Step 3: Cross multiply
    12,187.25x = 18,281.52 × 3,867.90
  4. Step 4: Simplify right side
    12,187.25x = 70,711,091.21
  5. Step 5: Solve for x
    x = 70,711,091.21/12,187.25
  6. Step 6: Final answer
    x = 5,802.06

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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.