Home / 28,147.96-42,239.25-11,508.08

Finding the Fourth Proportional to 28,147.96, 42,239.25 and 11,508.08

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Solution

The fourth proportional to 28,147.96, 42,239.25 and 11,508.08 is: 17,269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.96 : 42,239.25 = 11,508.08 : x
  2. Step 2: Convert to fraction form
    28,147.96/42,239.25 = 11,508.08/x
  3. Step 3: Cross multiply
    28,147.96x = 42,239.25 × 11,508.08
  4. Step 4: Simplify right side
    28,147.96x = 486,092,424.58
  5. Step 5: Solve for x
    x = 486,092,424.58/28,147.96
  6. Step 6: Final answer
    x = 17,269.19

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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.