Home / 15,741.60-21,723.68-8,667.52

Finding the Fourth Proportional to 15,741.60, 21,723.68 and 8,667.52

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Solution

The fourth proportional to 15,741.60, 21,723.68 and 8,667.52 is: 11,961.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.60 : 21,723.68 = 8,667.52 : x
  2. Step 2: Convert to fraction form
    15,741.60/21,723.68 = 8,667.52/x
  3. Step 3: Cross multiply
    15,741.60x = 21,723.68 × 8,667.52
  4. Step 4: Simplify right side
    15,741.60x = 188,290,430.87
  5. Step 5: Solve for x
    x = 188,290,430.87/15,741.60
  6. Step 6: Final answer
    x = 11,961.33

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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.