Home / 12,587.66-18,880.25-3,822.65

Finding the Fourth Proportional to 12,587.66, 18,880.25 and 3,822.65

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Solution

The fourth proportional to 12,587.66, 18,880.25 and 3,822.65 is: 5,733.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.66 : 18,880.25 = 3,822.65 : x
  2. Step 2: Convert to fraction form
    12,587.66/18,880.25 = 3,822.65/x
  3. Step 3: Cross multiply
    12,587.66x = 18,880.25 × 3,822.65
  4. Step 4: Simplify right side
    12,587.66x = 72,172,493.26
  5. Step 5: Solve for x
    x = 72,172,493.26/12,587.66
  6. Step 6: Final answer
    x = 5,733.59

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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.