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Finding the Fourth Proportional to 28,902.66, 43,353.98 and 8,126.16

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Solution

The fourth proportional to 28,902.66, 43,353.98 and 8,126.16 is: 12,189.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.66 : 43,353.98 = 8,126.16 : x
  2. Step 2: Convert to fraction form
    28,902.66/43,353.98 = 8,126.16/x
  3. Step 3: Cross multiply
    28,902.66x = 43,353.98 × 8,126.16
  4. Step 4: Simplify right side
    28,902.66x = 352,301,251.09
  5. Step 5: Solve for x
    x = 352,301,251.09/28,902.66
  6. Step 6: Final answer
    x = 12,189.23

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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.