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Finding the Fourth Proportional to 18,635.47, 27,949.64 and 7,237.40

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Solution

The fourth proportional to 18,635.47, 27,949.64 and 7,237.40 is: 10,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.47 : 27,949.64 = 7,237.40 : x
  2. Step 2: Convert to fraction form
    18,635.47/27,949.64 = 7,237.40/x
  3. Step 3: Cross multiply
    18,635.47x = 27,949.64 × 7,237.40
  4. Step 4: Simplify right side
    18,635.47x = 202,282,724.54
  5. Step 5: Solve for x
    x = 202,282,724.54/18,635.47
  6. Step 6: Final answer
    x = 10,854.72

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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.