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Finding the Fourth Proportional to 26,651.40, 39,977.10 and 16,809.90

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Solution

The fourth proportional to 26,651.40, 39,977.10 and 16,809.90 is: 25,214.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,651.40 : 39,977.10 = 16,809.90 : x
  2. Step 2: Convert to fraction form
    26,651.40/39,977.10 = 16,809.90/x
  3. Step 3: Cross multiply
    26,651.40x = 39,977.10 × 16,809.90
  4. Step 4: Simplify right side
    26,651.40x = 672,011,053.29
  5. Step 5: Solve for x
    x = 672,011,053.29/26,651.40
  6. Step 6: Final answer
    x = 25,214.85

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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.