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Finding the Fourth Proportional to 26,404.90, 39,607.38 and 7,936.90

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Solution

The fourth proportional to 26,404.90, 39,607.38 and 7,936.90 is: 11,905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,404.90 : 39,607.38 = 7,936.90 : x
  2. Step 2: Convert to fraction form
    26,404.90/39,607.38 = 7,936.90/x
  3. Step 3: Cross multiply
    26,404.90x = 39,607.38 × 7,936.90
  4. Step 4: Simplify right side
    26,404.90x = 314,359,814.32
  5. Step 5: Solve for x
    x = 314,359,814.32/26,404.90
  6. Step 6: Final answer
    x = 11,905.36

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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.