Home / 20,487.67-28,273.54-11,535.52

Finding the Fourth Proportional to 20,487.67, 28,273.54 and 11,535.52

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Solution

The fourth proportional to 20,487.67, 28,273.54 and 11,535.52 is: 15,919.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.67 : 28,273.54 = 11,535.52 : x
  2. Step 2: Convert to fraction form
    20,487.67/28,273.54 = 11,535.52/x
  3. Step 3: Cross multiply
    20,487.67x = 28,273.54 × 11,535.52
  4. Step 4: Simplify right side
    20,487.67x = 326,149,815.93
  5. Step 5: Solve for x
    x = 326,149,815.93/20,487.67
  6. Step 6: Final answer
    x = 15,919.32

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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.