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Finding the Fourth Proportional to 18,356.25, 27,535.74 and 5,209.68

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Solution

The fourth proportional to 18,356.25, 27,535.74 and 5,209.68 is: 7,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.25 : 27,535.74 = 5,209.68 : x
  2. Step 2: Convert to fraction form
    18,356.25/27,535.74 = 5,209.68/x
  3. Step 3: Cross multiply
    18,356.25x = 27,535.74 × 5,209.68
  4. Step 4: Simplify right side
    18,356.25x = 143,452,393.96
  5. Step 5: Solve for x
    x = 143,452,393.96/18,356.25
  6. Step 6: Final answer
    x = 7,814.91

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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.