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Finding the Fourth Proportional to 18,888.80, 28,333.19 and 8,998.09

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Solution

The fourth proportional to 18,888.80, 28,333.19 and 8,998.09 is: 13,497.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.80 : 28,333.19 = 8,998.09 : x
  2. Step 2: Convert to fraction form
    18,888.80/28,333.19 = 8,998.09/x
  3. Step 3: Cross multiply
    18,888.80x = 28,333.19 × 8,998.09
  4. Step 4: Simplify right side
    18,888.80x = 254,944,545.27
  5. Step 5: Solve for x
    x = 254,944,545.27/18,888.80
  6. Step 6: Final answer
    x = 13,497.13

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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.