Home / 18,751.28-28,136.12-11,729.52

Finding the Fourth Proportional to 18,751.28, 28,136.12 and 11,729.52

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Solution

The fourth proportional to 18,751.28, 28,136.12 and 11,729.52 is: 17,600.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.28 : 28,136.12 = 11,729.52 : x
  2. Step 2: Convert to fraction form
    18,751.28/28,136.12 = 11,729.52/x
  3. Step 3: Cross multiply
    18,751.28x = 28,136.12 × 11,729.52
  4. Step 4: Simplify right side
    18,751.28x = 330,023,182.26
  5. Step 5: Solve for x
    x = 330,023,182.26/18,751.28
  6. Step 6: Final answer
    x = 17,600.03

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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.