Home / 13,488.75-20,232.27-4,128.03

Finding the Fourth Proportional to 13,488.75, 20,232.27 and 4,128.03

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Solution

The fourth proportional to 13,488.75, 20,232.27 and 4,128.03 is: 6,191.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.75 : 20,232.27 = 4,128.03 : x
  2. Step 2: Convert to fraction form
    13,488.75/20,232.27 = 4,128.03/x
  3. Step 3: Cross multiply
    13,488.75x = 20,232.27 × 4,128.03
  4. Step 4: Simplify right side
    13,488.75x = 83,519,417.53
  5. Step 5: Solve for x
    x = 83,519,417.53/13,488.75
  6. Step 6: Final answer
    x = 6,191.78

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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.