Home / 20,143.92-27,793.62-12,578.52

Finding the Fourth Proportional to 20,143.92, 27,793.62 and 12,578.52

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Solution

The fourth proportional to 20,143.92, 27,793.62 and 12,578.52 is: 17,355.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.92 : 27,793.62 = 12,578.52 : x
  2. Step 2: Convert to fraction form
    20,143.92/27,793.62 = 12,578.52/x
  3. Step 3: Cross multiply
    20,143.92x = 27,793.62 × 12,578.52
  4. Step 4: Simplify right side
    20,143.92x = 349,602,605.04
  5. Step 5: Solve for x
    x = 349,602,605.04/20,143.92
  6. Step 6: Final answer
    x = 17,355.24

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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.