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Finding the Fourth Proportional to 26,404.34, 39,581.71 and 8,861.87

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Solution

The fourth proportional to 26,404.34, 39,581.71 and 8,861.87 is: 13,284.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,404.34 : 39,581.71 = 8,861.87 : x
  2. Step 2: Convert to fraction form
    26,404.34/39,581.71 = 8,861.87/x
  3. Step 3: Cross multiply
    26,404.34x = 39,581.71 × 8,861.87
  4. Step 4: Simplify right side
    26,404.34x = 350,767,968.40
  5. Step 5: Solve for x
    x = 350,767,968.40/26,404.34
  6. Step 6: Final answer
    x = 13,284.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.