Home / 11,986.20-17,982.18-4,590.54

Finding the Fourth Proportional to 11,986.20, 17,982.18 and 4,590.54

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Solution

The fourth proportional to 11,986.20, 17,982.18 and 4,590.54 is: 6,886.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.20 : 17,982.18 = 4,590.54 : x
  2. Step 2: Convert to fraction form
    11,986.20/17,982.18 = 4,590.54/x
  3. Step 3: Cross multiply
    11,986.20x = 17,982.18 × 4,590.54
  4. Step 4: Simplify right side
    11,986.20x = 82,547,916.58
  5. Step 5: Solve for x
    x = 82,547,916.58/11,986.20
  6. Step 6: Final answer
    x = 6,886.91

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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.