Home / 28,520.76-39,357.66-15,945.48

Finding the Fourth Proportional to 28,520.76, 39,357.66 and 15,945.48

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Solution

The fourth proportional to 28,520.76, 39,357.66 and 15,945.48 is: 22,004.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.76 : 39,357.66 = 15,945.48 : x
  2. Step 2: Convert to fraction form
    28,520.76/39,357.66 = 15,945.48/x
  3. Step 3: Cross multiply
    28,520.76x = 39,357.66 × 15,945.48
  4. Step 4: Simplify right side
    28,520.76x = 627,576,780.38
  5. Step 5: Solve for x
    x = 627,576,780.38/28,520.76
  6. Step 6: Final answer
    x = 22,004.21

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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.