Home / 15,741.70-21,723.54-8,667.94

Finding the Fourth Proportional to 15,741.70, 21,723.54 and 8,667.94

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Solution

The fourth proportional to 15,741.70, 21,723.54 and 8,667.94 is: 11,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.70 : 21,723.54 = 8,667.94 : x
  2. Step 2: Convert to fraction form
    15,741.70/21,723.54 = 8,667.94/x
  3. Step 3: Cross multiply
    15,741.70x = 21,723.54 × 8,667.94
  4. Step 4: Simplify right side
    15,741.70x = 188,298,341.31
  5. Step 5: Solve for x
    x = 188,298,341.31/15,741.70
  6. Step 6: Final answer
    x = 11,961.75

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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.