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Finding the Fourth Proportional to 28,728.74, 43,093.11 and 9,008.89

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Solution

The fourth proportional to 28,728.74, 43,093.11 and 9,008.89 is: 13,513.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.74 : 43,093.11 = 9,008.89 : x
  2. Step 2: Convert to fraction form
    28,728.74/43,093.11 = 9,008.89/x
  3. Step 3: Cross multiply
    28,728.74x = 43,093.11 × 9,008.89
  4. Step 4: Simplify right side
    28,728.74x = 388,221,013.80
  5. Step 5: Solve for x
    x = 388,221,013.80/28,728.74
  6. Step 6: Final answer
    x = 13,513.33

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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.