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Finding the Fourth Proportional to 28,809.14, 43,213.71 and 9,089.69

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Solution

The fourth proportional to 28,809.14, 43,213.71 and 9,089.69 is: 13,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.14 : 43,213.71 = 9,089.69 : x
  2. Step 2: Convert to fraction form
    28,809.14/43,213.71 = 9,089.69/x
  3. Step 3: Cross multiply
    28,809.14x = 43,213.71 × 9,089.69
  4. Step 4: Simplify right side
    28,809.14x = 392,799,227.65
  5. Step 5: Solve for x
    x = 392,799,227.65/28,809.14
  6. Step 6: Final answer
    x = 13,634.54

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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.