Home / 31,279.07-43,164.90-16,938.57

Finding the Fourth Proportional to 31,279.07, 43,164.90 and 16,938.57

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Solution

The fourth proportional to 31,279.07, 43,164.90 and 16,938.57 is: 23,375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,279.07 : 43,164.90 = 16,938.57 : x
  2. Step 2: Convert to fraction form
    31,279.07/43,164.90 = 16,938.57/x
  3. Step 3: Cross multiply
    31,279.07x = 43,164.90 × 16,938.57
  4. Step 4: Simplify right side
    31,279.07x = 731,151,735.84
  5. Step 5: Solve for x
    x = 731,151,735.84/31,279.07
  6. Step 6: Final answer
    x = 23,375.11

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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.