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Finding the Fourth Proportional to 18,902.48, 28,310.52 and 9,048.68

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Solution

The fourth proportional to 18,902.48, 28,310.52 and 9,048.68 is: 13,552.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.48 : 28,310.52 = 9,048.68 : x
  2. Step 2: Convert to fraction form
    18,902.48/28,310.52 = 9,048.68/x
  3. Step 3: Cross multiply
    18,902.48x = 28,310.52 × 9,048.68
  4. Step 4: Simplify right side
    18,902.48x = 256,172,836.11
  5. Step 5: Solve for x
    x = 256,172,836.11/18,902.48
  6. Step 6: Final answer
    x = 13,552.34

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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.