Home / 26,147.85-36,084.90-15,390.78

Finding the Fourth Proportional to 26,147.85, 36,084.90 and 15,390.78

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Solution

The fourth proportional to 26,147.85, 36,084.90 and 15,390.78 is: 21,239.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,147.85 : 36,084.90 = 15,390.78 : x
  2. Step 2: Convert to fraction form
    26,147.85/36,084.90 = 15,390.78/x
  3. Step 3: Cross multiply
    26,147.85x = 36,084.90 × 15,390.78
  4. Step 4: Simplify right side
    26,147.85x = 555,374,757.22
  5. Step 5: Solve for x
    x = 555,374,757.22/26,147.85
  6. Step 6: Final answer
    x = 21,239.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.