Home / 28,927.20-43,390.80-13,375.20

Finding the Fourth Proportional to 28,927.20, 43,390.80 and 13,375.20

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Solution

The fourth proportional to 28,927.20, 43,390.80 and 13,375.20 is: 20,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,927.20 : 43,390.80 = 13,375.20 : x
  2. Step 2: Convert to fraction form
    28,927.20/43,390.80 = 13,375.20/x
  3. Step 3: Cross multiply
    28,927.20x = 43,390.80 × 13,375.20
  4. Step 4: Simplify right side
    28,927.20x = 580,360,628.16
  5. Step 5: Solve for x
    x = 580,360,628.16/28,927.20
  6. Step 6: Final answer
    x = 20,062.80

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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.