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Finding the Fourth Proportional to 18,356.26, 27,534.38 and 5,208.74

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Solution

The fourth proportional to 18,356.26, 27,534.38 and 5,208.74 is: 7,813.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.26 : 27,534.38 = 5,208.74 : x
  2. Step 2: Convert to fraction form
    18,356.26/27,534.38 = 5,208.74/x
  3. Step 3: Cross multiply
    18,356.26x = 27,534.38 × 5,208.74
  4. Step 4: Simplify right side
    18,356.26x = 143,419,426.48
  5. Step 5: Solve for x
    x = 143,419,426.48/18,356.26
  6. Step 6: Final answer
    x = 7,813.11

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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.