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Finding the Fourth Proportional to 28,874.88, 43,308.09 and 7,816.14

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Solution

The fourth proportional to 28,874.88, 43,308.09 and 7,816.14 is: 11,723.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,874.88 : 43,308.09 = 7,816.14 : x
  2. Step 2: Convert to fraction form
    28,874.88/43,308.09 = 7,816.14/x
  3. Step 3: Cross multiply
    28,874.88x = 43,308.09 × 7,816.14
  4. Step 4: Simplify right side
    28,874.88x = 338,502,094.57
  5. Step 5: Solve for x
    x = 338,502,094.57/28,874.88
  6. Step 6: Final answer
    x = 11,723.06

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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.