Home / 15,910.64-21,954.12-9,195.20

Finding the Fourth Proportional to 15,910.64, 21,954.12 and 9,195.20

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Solution

The fourth proportional to 15,910.64, 21,954.12 and 9,195.20 is: 12,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.64 : 21,954.12 = 9,195.20 : x
  2. Step 2: Convert to fraction form
    15,910.64/21,954.12 = 9,195.20/x
  3. Step 3: Cross multiply
    15,910.64x = 21,954.12 × 9,195.20
  4. Step 4: Simplify right side
    15,910.64x = 201,872,524.22
  5. Step 5: Solve for x
    x = 201,872,524.22/15,910.64
  6. Step 6: Final answer
    x = 12,687.89

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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.