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Finding the Fourth Proportional to 28,697.27, 43,044.71 and 9,981.54

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Solution

The fourth proportional to 28,697.27, 43,044.71 and 9,981.54 is: 14,971.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.27 : 43,044.71 = 9,981.54 : x
  2. Step 2: Convert to fraction form
    28,697.27/43,044.71 = 9,981.54/x
  3. Step 3: Cross multiply
    28,697.27x = 43,044.71 × 9,981.54
  4. Step 4: Simplify right side
    28,697.27x = 429,652,444.75
  5. Step 5: Solve for x
    x = 429,652,444.75/28,697.27
  6. Step 6: Final answer
    x = 14,971.90

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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.