Home / 15,719.94-21,694.23-8,646.75

Finding the Fourth Proportional to 15,719.94, 21,694.23 and 8,646.75

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Solution

The fourth proportional to 15,719.94, 21,694.23 and 8,646.75 is: 11,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.94 : 21,694.23 = 8,646.75 : x
  2. Step 2: Convert to fraction form
    15,719.94/21,694.23 = 8,646.75/x
  3. Step 3: Cross multiply
    15,719.94x = 21,694.23 × 8,646.75
  4. Step 4: Simplify right side
    15,719.94x = 187,584,583.25
  5. Step 5: Solve for x
    x = 187,584,583.25/15,719.94
  6. Step 6: Final answer
    x = 11,932.91

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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.