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Finding the Fourth Proportional to 12,483.66, 18,709.29 and 5,079.52

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Solution

The fourth proportional to 12,483.66, 18,709.29 and 5,079.52 is: 7,612.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483.66 : 18,709.29 = 5,079.52 : x
  2. Step 2: Convert to fraction form
    12,483.66/18,709.29 = 5,079.52/x
  3. Step 3: Cross multiply
    12,483.66x = 18,709.29 × 5,079.52
  4. Step 4: Simplify right side
    12,483.66x = 95,034,165.97
  5. Step 5: Solve for x
    x = 95,034,165.97/12,483.66
  6. Step 6: Final answer
    x = 7,612.68

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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.