Home / 12,042.96-18,068.76-5,118

Finding the Fourth Proportional to 12,042.96, 18,068.76 and 5,118

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Solution

The fourth proportional to 12,042.96, 18,068.76 and 5,118 is: 7,678.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042.96 : 18,068.76 = 5,118 : x
  2. Step 2: Convert to fraction form
    12,042.96/18,068.76 = 5,118/x
  3. Step 3: Cross multiply
    12,042.96x = 18,068.76 × 5,118
  4. Step 4: Simplify right side
    12,042.96x = 92,475,913.68
  5. Step 5: Solve for x
    x = 92,475,913.68/12,042.96
  6. Step 6: Final answer
    x = 7,678.84

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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.