Home / 20,378.38-28,099.56-14,399.77

Finding the Fourth Proportional to 20,378.38, 28,099.56 and 14,399.77

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Solution

The fourth proportional to 20,378.38, 28,099.56 and 14,399.77 is: 19,855.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.38 : 28,099.56 = 14,399.77 : x
  2. Step 2: Convert to fraction form
    20,378.38/28,099.56 = 14,399.77/x
  3. Step 3: Cross multiply
    20,378.38x = 28,099.56 × 14,399.77
  4. Step 4: Simplify right side
    20,378.38x = 404,627,201.10
  5. Step 5: Solve for x
    x = 404,627,201.10/20,378.38
  6. Step 6: Final answer
    x = 19,855.71

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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.