Home / 21,228.52-31,867.38-11,387.02

Finding the Fourth Proportional to 21,228.52, 31,867.38 and 11,387.02

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Solution

The fourth proportional to 21,228.52, 31,867.38 and 11,387.02 is: 17,093.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,228.52 : 31,867.38 = 11,387.02 : x
  2. Step 2: Convert to fraction form
    21,228.52/31,867.38 = 11,387.02/x
  3. Step 3: Cross multiply
    21,228.52x = 31,867.38 × 11,387.02
  4. Step 4: Simplify right side
    21,228.52x = 362,874,493.41
  5. Step 5: Solve for x
    x = 362,874,493.41/21,228.52
  6. Step 6: Final answer
    x = 17,093.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.