Home / 18,143.75-25,029.87-12,841.49

Finding the Fourth Proportional to 18,143.75, 25,029.87 and 12,841.49

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Solution

The fourth proportional to 18,143.75, 25,029.87 and 12,841.49 is: 17,715.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.75 : 25,029.87 = 12,841.49 : x
  2. Step 2: Convert to fraction form
    18,143.75/25,029.87 = 12,841.49/x
  3. Step 3: Cross multiply
    18,143.75x = 25,029.87 × 12,841.49
  4. Step 4: Simplify right side
    18,143.75x = 321,420,825.31
  5. Step 5: Solve for x
    x = 321,420,825.31/18,143.75
  6. Step 6: Final answer
    x = 17,715.24

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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.