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Finding the Fourth Proportional to 26,404.78, 39,616.01 and 8,636.26

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Solution

The fourth proportional to 26,404.78, 39,616.01 and 8,636.26 is: 12,957.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,404.78 : 39,616.01 = 8,636.26 : x
  2. Step 2: Convert to fraction form
    26,404.78/39,616.01 = 8,636.26/x
  3. Step 3: Cross multiply
    26,404.78x = 39,616.01 × 8,636.26
  4. Step 4: Simplify right side
    26,404.78x = 342,134,162.52
  5. Step 5: Solve for x
    x = 342,134,162.52/26,404.78
  6. Step 6: Final answer
    x = 12,957.28

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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.