Home / 15,749.42-21,734.17-8,675.75

Finding the Fourth Proportional to 15,749.42, 21,734.17 and 8,675.75

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Solution

The fourth proportional to 15,749.42, 21,734.17 and 8,675.75 is: 11,972.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.42 : 21,734.17 = 8,675.75 : x
  2. Step 2: Convert to fraction form
    15,749.42/21,734.17 = 8,675.75/x
  3. Step 3: Cross multiply
    15,749.42x = 21,734.17 × 8,675.75
  4. Step 4: Simplify right side
    15,749.42x = 188,560,225.38
  5. Step 5: Solve for x
    x = 188,560,225.38/15,749.42
  6. Step 6: Final answer
    x = 11,972.52

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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.