Home / 20,147.45-27,797.12-12,079.45

Finding the Fourth Proportional to 20,147.45, 27,797.12 and 12,079.45

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Solution

The fourth proportional to 20,147.45, 27,797.12 and 12,079.45 is: 16,665.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.45 : 27,797.12 = 12,079.45 : x
  2. Step 2: Convert to fraction form
    20,147.45/27,797.12 = 12,079.45/x
  3. Step 3: Cross multiply
    20,147.45x = 27,797.12 × 12,079.45
  4. Step 4: Simplify right side
    20,147.45x = 335,773,721.80
  5. Step 5: Solve for x
    x = 335,773,721.80/20,147.45
  6. Step 6: Final answer
    x = 16,665.82

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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.