Home / 36,918.78-55,407.32-13,551.90

Finding the Fourth Proportional to 36,918.78, 55,407.32 and 13,551.90

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Solution

The fourth proportional to 36,918.78, 55,407.32 and 13,551.90 is: 20,338.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,918.78 : 55,407.32 = 13,551.90 : x
  2. Step 2: Convert to fraction form
    36,918.78/55,407.32 = 13,551.90/x
  3. Step 3: Cross multiply
    36,918.78x = 55,407.32 × 13,551.90
  4. Step 4: Simplify right side
    36,918.78x = 750,874,459.91
  5. Step 5: Solve for x
    x = 750,874,459.91/36,918.78
  6. Step 6: Final answer
    x = 20,338.55

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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.