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Finding the Fourth Proportional to 26,609.49, 39,919.64 and 9,969.21

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Solution

The fourth proportional to 26,609.49, 39,919.64 and 9,969.21 is: 14,955.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,609.49 : 39,919.64 = 9,969.21 : x
  2. Step 2: Convert to fraction form
    26,609.49/39,919.64 = 9,969.21/x
  3. Step 3: Cross multiply
    26,609.49x = 39,919.64 × 9,969.21
  4. Step 4: Simplify right side
    26,609.49x = 397,967,224.44
  5. Step 5: Solve for x
    x = 397,967,224.44/26,609.49
  6. Step 6: Final answer
    x = 14,955.84

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1.5x scale

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.