Home / 15,749.18-21,734.87-8,675.61

Finding the Fourth Proportional to 15,749.18, 21,734.87 and 8,675.61

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Solution

The fourth proportional to 15,749.18, 21,734.87 and 8,675.61 is: 11,972.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.18 : 21,734.87 = 8,675.61 : x
  2. Step 2: Convert to fraction form
    15,749.18/21,734.87 = 8,675.61/x
  3. Step 3: Cross multiply
    15,749.18x = 21,734.87 × 8,675.61
  4. Step 4: Simplify right side
    15,749.18x = 188,563,212.14
  5. Step 5: Solve for x
    x = 188,563,212.14/15,749.18
  6. Step 6: Final answer
    x = 11,972.89

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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.