Home / 20,134.07-27,787.20-12,180.68

Finding the Fourth Proportional to 20,134.07, 27,787.20 and 12,180.68

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Solution

The fourth proportional to 20,134.07, 27,787.20 and 12,180.68 is: 16,810.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.07 : 27,787.20 = 12,180.68 : x
  2. Step 2: Convert to fraction form
    20,134.07/27,787.20 = 12,180.68/x
  3. Step 3: Cross multiply
    20,134.07x = 27,787.20 × 12,180.68
  4. Step 4: Simplify right side
    20,134.07x = 338,466,979.40
  5. Step 5: Solve for x
    x = 338,466,979.40/20,134.07
  6. Step 6: Final answer
    x = 16,810.66

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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.