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Finding the Fourth Proportional to 26,612, 39,918.20 and 11,816.94

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Solution

The fourth proportional to 26,612, 39,918.20 and 11,816.94 is: 17,725.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,612 : 39,918.20 = 11,816.94 : x
  2. Step 2: Convert to fraction form
    26,612/39,918.20 = 11,816.94/x
  3. Step 3: Cross multiply
    26,612x = 39,918.20 × 11,816.94
  4. Step 4: Simplify right side
    26,612x = 471,710,974.31
  5. Step 5: Solve for x
    x = 471,710,974.31/26,612
  6. Step 6: Final answer
    x = 17,725.50

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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.