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Finding the Fourth Proportional to 18,908.47, 28,324.49 and 9,535.46

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Solution

The fourth proportional to 18,908.47, 28,324.49 and 9,535.46 is: 14,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.47 : 28,324.49 = 9,535.46 : x
  2. Step 2: Convert to fraction form
    18,908.47/28,324.49 = 9,535.46/x
  3. Step 3: Cross multiply
    18,908.47x = 28,324.49 × 9,535.46
  4. Step 4: Simplify right side
    18,908.47x = 270,086,852.12
  5. Step 5: Solve for x
    x = 270,086,852.12/18,908.47
  6. Step 6: Final answer
    x = 14,283.91

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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.