Home / 15,899.22-21,939.75-8,825.04

Finding the Fourth Proportional to 15,899.22, 21,939.75 and 8,825.04

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Solution

The fourth proportional to 15,899.22, 21,939.75 and 8,825.04 is: 12,177.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.22 : 21,939.75 = 8,825.04 : x
  2. Step 2: Convert to fraction form
    15,899.22/21,939.75 = 8,825.04/x
  3. Step 3: Cross multiply
    15,899.22x = 21,939.75 × 8,825.04
  4. Step 4: Simplify right side
    15,899.22x = 193,619,171.34
  5. Step 5: Solve for x
    x = 193,619,171.34/15,899.22
  6. Step 6: Final answer
    x = 12,177.90

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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.