Home / 12,580.92-18,868.14-5,187.48

Finding the Fourth Proportional to 12,580.92, 18,868.14 and 5,187.48

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Solution

The fourth proportional to 12,580.92, 18,868.14 and 5,187.48 is: 7,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,580.92 : 18,868.14 = 5,187.48 : x
  2. Step 2: Convert to fraction form
    12,580.92/18,868.14 = 5,187.48/x
  3. Step 3: Cross multiply
    12,580.92x = 18,868.14 × 5,187.48
  4. Step 4: Simplify right side
    12,580.92x = 97,878,098.89
  5. Step 5: Solve for x
    x = 97,878,098.89/12,580.92
  6. Step 6: Final answer
    x = 7,779.88

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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.