Home / 12,587.15-18,879.51-3,822.14

Finding the Fourth Proportional to 12,587.15, 18,879.51 and 3,822.14

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Solution

The fourth proportional to 12,587.15, 18,879.51 and 3,822.14 is: 5,732.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.15 : 18,879.51 = 3,822.14 : x
  2. Step 2: Convert to fraction form
    12,587.15/18,879.51 = 3,822.14/x
  3. Step 3: Cross multiply
    12,587.15x = 18,879.51 × 3,822.14
  4. Step 4: Simplify right side
    12,587.15x = 72,160,177.55
  5. Step 5: Solve for x
    x = 72,160,177.55/12,587.15
  6. Step 6: Final answer
    x = 5,732.84

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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.