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Finding the Fourth Proportional to 18,632.97, 27,953.51 and 9,278.08

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Solution

The fourth proportional to 18,632.97, 27,953.51 and 9,278.08 is: 13,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632.97 : 27,953.51 = 9,278.08 : x
  2. Step 2: Convert to fraction form
    18,632.97/27,953.51 = 9,278.08/x
  3. Step 3: Cross multiply
    18,632.97x = 27,953.51 × 9,278.08
  4. Step 4: Simplify right side
    18,632.97x = 259,354,785.79
  5. Step 5: Solve for x
    x = 259,354,785.79/18,632.97
  6. Step 6: Final answer
    x = 13,919.13

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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.