Home / 15,739.00-21,719.30-8,568.78

Finding the Fourth Proportional to 15,739.00, 21,719.30 and 8,568.78

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Solution

The fourth proportional to 15,739.00, 21,719.30 and 8,568.78 is: 11,824.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.00 : 21,719.30 = 8,568.78 : x
  2. Step 2: Convert to fraction form
    15,739.00/21,719.30 = 8,568.78/x
  3. Step 3: Cross multiply
    15,739.00x = 21,719.30 × 8,568.78
  4. Step 4: Simplify right side
    15,739.00x = 186,107,901.33
  5. Step 5: Solve for x
    x = 186,107,901.33/15,739.00
  6. Step 6: Final answer
    x = 11,824.63

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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.