Home / 20,271.25-27,974.01-11,318.88

Finding the Fourth Proportional to 20,271.25, 27,974.01 and 11,318.88

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Solution

The fourth proportional to 20,271.25, 27,974.01 and 11,318.88 is: 15,619.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.25 : 27,974.01 = 11,318.88 : x
  2. Step 2: Convert to fraction form
    20,271.25/27,974.01 = 11,318.88/x
  3. Step 3: Cross multiply
    20,271.25x = 27,974.01 × 11,318.88
  4. Step 4: Simplify right side
    20,271.25x = 316,634,462.31
  5. Step 5: Solve for x
    x = 316,634,462.31/20,271.25
  6. Step 6: Final answer
    x = 15,619.88

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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.