Home / 20,154.96-27,815.88-11,772.24

Finding the Fourth Proportional to 20,154.96, 27,815.88 and 11,772.24

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Solution

The fourth proportional to 20,154.96, 27,815.88 and 11,772.24 is: 16,246.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.96 : 27,815.88 = 11,772.24 : x
  2. Step 2: Convert to fraction form
    20,154.96/27,815.88 = 11,772.24/x
  3. Step 3: Cross multiply
    20,154.96x = 27,815.88 × 11,772.24
  4. Step 4: Simplify right side
    20,154.96x = 327,455,215.17
  5. Step 5: Solve for x
    x = 327,455,215.17/20,154.96
  6. Step 6: Final answer
    x = 16,246.88

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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.