Home / 15,741.12-21,722.70-8,667.54

Finding the Fourth Proportional to 15,741.12, 21,722.70 and 8,667.54

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Solution

The fourth proportional to 15,741.12, 21,722.70 and 8,667.54 is: 11,961.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.12 : 21,722.70 = 8,667.54 : x
  2. Step 2: Convert to fraction form
    15,741.12/21,722.70 = 8,667.54/x
  3. Step 3: Cross multiply
    15,741.12x = 21,722.70 × 8,667.54
  4. Step 4: Simplify right side
    15,741.12x = 188,282,371.16
  5. Step 5: Solve for x
    x = 188,282,371.16/15,741.12
  6. Step 6: Final answer
    x = 11,961.18

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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.