Home / 21,116.64-31,655.76-8,797.92

Finding the Fourth Proportional to 21,116.64, 31,655.76 and 8,797.92

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Solution

The fourth proportional to 21,116.64, 31,655.76 and 8,797.92 is: 13,188.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.64 : 31,655.76 = 8,797.92 : x
  2. Step 2: Convert to fraction form
    21,116.64/31,655.76 = 8,797.92/x
  3. Step 3: Cross multiply
    21,116.64x = 31,655.76 × 8,797.92
  4. Step 4: Simplify right side
    21,116.64x = 278,504,844.02
  5. Step 5: Solve for x
    x = 278,504,844.02/21,116.64
  6. Step 6: Final answer
    x = 13,188.88

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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.