Home / 12,587.85-18,890.33-5,192.24

Finding the Fourth Proportional to 12,587.85, 18,890.33 and 5,192.24

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Solution

The fourth proportional to 12,587.85, 18,890.33 and 5,192.24 is: 7,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.85 : 18,890.33 = 5,192.24 : x
  2. Step 2: Convert to fraction form
    12,587.85/18,890.33 = 5,192.24/x
  3. Step 3: Cross multiply
    12,587.85x = 18,890.33 × 5,192.24
  4. Step 4: Simplify right side
    12,587.85x = 98,083,148.30
  5. Step 5: Solve for x
    x = 98,083,148.30/12,587.85
  6. Step 6: Final answer
    x = 7,791.89

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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.