Home / 28,177.89-38,876.67-16,239.60

Finding the Fourth Proportional to 28,177.89, 38,876.67 and 16,239.60

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Solution

The fourth proportional to 28,177.89, 38,876.67 and 16,239.60 is: 22,405.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.89 : 38,876.67 = 16,239.60 : x
  2. Step 2: Convert to fraction form
    28,177.89/38,876.67 = 16,239.60/x
  3. Step 3: Cross multiply
    28,177.89x = 38,876.67 × 16,239.60
  4. Step 4: Simplify right side
    28,177.89x = 631,341,375.75
  5. Step 5: Solve for x
    x = 631,341,375.75/28,177.89
  6. Step 6: Final answer
    x = 22,405.56

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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.