Home / 36,279.38-54,419.34-9,985.57

Finding the Fourth Proportional to 36,279.38, 54,419.34 and 9,985.57

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Solution

The fourth proportional to 36,279.38, 54,419.34 and 9,985.57 is: 14,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,279.38 : 54,419.34 = 9,985.57 : x
  2. Step 2: Convert to fraction form
    36,279.38/54,419.34 = 9,985.57/x
  3. Step 3: Cross multiply
    36,279.38x = 54,419.34 × 9,985.57
  4. Step 4: Simplify right side
    36,279.38x = 543,408,128.92
  5. Step 5: Solve for x
    x = 543,408,128.92/36,279.38
  6. Step 6: Final answer
    x = 14,978.43

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1.5x scale

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.