Home / 28,138.19-42,186.27-17,042.18

Finding the Fourth Proportional to 28,138.19, 42,186.27 and 17,042.18

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Solution

The fourth proportional to 28,138.19, 42,186.27 and 17,042.18 is: 25,550.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.19 : 42,186.27 = 17,042.18 : x
  2. Step 2: Convert to fraction form
    28,138.19/42,186.27 = 17,042.18/x
  3. Step 3: Cross multiply
    28,138.19x = 42,186.27 × 17,042.18
  4. Step 4: Simplify right side
    28,138.19x = 718,946,006.87
  5. Step 5: Solve for x
    x = 718,946,006.87/28,138.19
  6. Step 6: Final answer
    x = 25,550.54

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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.