Home / 15,741.50-21,722.84-8,667.96

Finding the Fourth Proportional to 15,741.50, 21,722.84 and 8,667.96

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Solution

The fourth proportional to 15,741.50, 21,722.84 and 8,667.96 is: 11,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.50 : 21,722.84 = 8,667.96 : x
  2. Step 2: Convert to fraction form
    15,741.50/21,722.84 = 8,667.96/x
  3. Step 3: Cross multiply
    15,741.50x = 21,722.84 × 8,667.96
  4. Step 4: Simplify right side
    15,741.50x = 188,292,708.21
  5. Step 5: Solve for x
    x = 188,292,708.21/15,741.50
  6. Step 6: Final answer
    x = 11,961.55

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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.