Home / 10,815.18-16,221.52-2,918.26

Finding the Fourth Proportional to 10,815.18, 16,221.52 and 2,918.26

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Solution

The fourth proportional to 10,815.18, 16,221.52 and 2,918.26 is: 4,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.18 : 16,221.52 = 2,918.26 : x
  2. Step 2: Convert to fraction form
    10,815.18/16,221.52 = 2,918.26/x
  3. Step 3: Cross multiply
    10,815.18x = 16,221.52 × 2,918.26
  4. Step 4: Simplify right side
    10,815.18x = 47,338,612.96
  5. Step 5: Solve for x
    x = 47,338,612.96/10,815.18
  6. Step 6: Final answer
    x = 4,377.05

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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.