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Finding the Fourth Proportional to 26,612.68, 39,918.78 and 6,622.20

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Solution

The fourth proportional to 26,612.68, 39,918.78 and 6,622.20 is: 9,933.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,612.68 : 39,918.78 = 6,622.20 : x
  2. Step 2: Convert to fraction form
    26,612.68/39,918.78 = 6,622.20/x
  3. Step 3: Cross multiply
    26,612.68x = 39,918.78 × 6,622.20
  4. Step 4: Simplify right side
    26,612.68x = 264,350,144.92
  5. Step 5: Solve for x
    x = 264,350,144.92/26,612.68
  6. Step 6: Final answer
    x = 9,933.24

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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.