Home / 15,263.28-21,067.44-8,979.84

Finding the Fourth Proportional to 15,263.28, 21,067.44 and 8,979.84

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Solution

The fourth proportional to 15,263.28, 21,067.44 and 8,979.84 is: 12,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,263.28 : 21,067.44 = 8,979.84 : x
  2. Step 2: Convert to fraction form
    15,263.28/21,067.44 = 8,979.84/x
  3. Step 3: Cross multiply
    15,263.28x = 21,067.44 × 8,979.84
  4. Step 4: Simplify right side
    15,263.28x = 189,182,240.41
  5. Step 5: Solve for x
    x = 189,182,240.41/15,263.28
  6. Step 6: Final answer
    x = 12,394.60

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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.