Home / 15,741.36-21,723.09-8,667.75

Finding the Fourth Proportional to 15,741.36, 21,723.09 and 8,667.75

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Solution

The fourth proportional to 15,741.36, 21,723.09 and 8,667.75 is: 11,961.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.36 : 21,723.09 = 8,667.75 : x
  2. Step 2: Convert to fraction form
    15,741.36/21,723.09 = 8,667.75/x
  3. Step 3: Cross multiply
    15,741.36x = 21,723.09 × 8,667.75
  4. Step 4: Simplify right side
    15,741.36x = 188,290,313.35
  5. Step 5: Solve for x
    x = 188,290,313.35/15,741.36
  6. Step 6: Final answer
    x = 11,961.50

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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.