Home / 28,117.38-42,155.24-17,021.45

Finding the Fourth Proportional to 28,117.38, 42,155.24 and 17,021.45

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Solution

The fourth proportional to 28,117.38, 42,155.24 and 17,021.45 is: 25,519.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.38 : 42,155.24 = 17,021.45 : x
  2. Step 2: Convert to fraction form
    28,117.38/42,155.24 = 17,021.45/x
  3. Step 3: Cross multiply
    28,117.38x = 42,155.24 × 17,021.45
  4. Step 4: Simplify right side
    28,117.38x = 717,543,014.01
  5. Step 5: Solve for x
    x = 717,543,014.01/28,117.38
  6. Step 6: Final answer
    x = 25,519.55

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1.5x scale

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.