Home / 20,102.49-27,744.63-12,145.86

Finding the Fourth Proportional to 20,102.49, 27,744.63 and 12,145.86

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Solution

The fourth proportional to 20,102.49, 27,744.63 and 12,145.86 is: 16,763.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.49 : 27,744.63 = 12,145.86 : x
  2. Step 2: Convert to fraction form
    20,102.49/27,744.63 = 12,145.86/x
  3. Step 3: Cross multiply
    20,102.49x = 27,744.63 × 12,145.86
  4. Step 4: Simplify right side
    20,102.49x = 336,982,391.73
  5. Step 5: Solve for x
    x = 336,982,391.73/20,102.49
  6. Step 6: Final answer
    x = 16,763.22

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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.