Home / 28,762.38-43,112.61-13,938.57

Finding the Fourth Proportional to 28,762.38, 43,112.61 and 13,938.57

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Solution

The fourth proportional to 28,762.38, 43,112.61 and 13,938.57 is: 20,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.38 : 43,112.61 = 13,938.57 : x
  2. Step 2: Convert to fraction form
    28,762.38/43,112.61 = 13,938.57/x
  3. Step 3: Cross multiply
    28,762.38x = 43,112.61 × 13,938.57
  4. Step 4: Simplify right side
    28,762.38x = 600,928,132.37
  5. Step 5: Solve for x
    x = 600,928,132.37/28,762.38
  6. Step 6: Final answer
    x = 20,892.85

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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.