Home / 28,121.18-42,160.76-17,025.20

Finding the Fourth Proportional to 28,121.18, 42,160.76 and 17,025.20

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Solution

The fourth proportional to 28,121.18, 42,160.76 and 17,025.20 is: 25,525.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.18 : 42,160.76 = 17,025.20 : x
  2. Step 2: Convert to fraction form
    28,121.18/42,160.76 = 17,025.20/x
  3. Step 3: Cross multiply
    28,121.18x = 42,160.76 × 17,025.20
  4. Step 4: Simplify right side
    28,121.18x = 717,795,371.15
  5. Step 5: Solve for x
    x = 717,795,371.15/28,121.18
  6. Step 6: Final answer
    x = 25,525.08

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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.