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Finding the Fourth Proportional to 28,685.08, 43,026.54 and 7,908.04

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Solution

The fourth proportional to 28,685.08, 43,026.54 and 7,908.04 is: 11,861.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,685.08 : 43,026.54 = 7,908.04 : x
  2. Step 2: Convert to fraction form
    28,685.08/43,026.54 = 7,908.04/x
  3. Step 3: Cross multiply
    28,685.08x = 43,026.54 × 7,908.04
  4. Step 4: Simplify right side
    28,685.08x = 340,255,599.38
  5. Step 5: Solve for x
    x = 340,255,599.38/28,685.08
  6. Step 6: Final answer
    x = 11,861.76

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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.