Home / 11,119.07-16,691.58-8,780.65

Finding the Fourth Proportional to 11,119.07, 16,691.58 and 8,780.65

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Solution

The fourth proportional to 11,119.07, 16,691.58 and 8,780.65 is: 13,181.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.07 : 16,691.58 = 8,780.65 : x
  2. Step 2: Convert to fraction form
    11,119.07/16,691.58 = 8,780.65/x
  3. Step 3: Cross multiply
    11,119.07x = 16,691.58 × 8,780.65
  4. Step 4: Simplify right side
    11,119.07x = 146,562,880.20
  5. Step 5: Solve for x
    x = 146,562,880.20/11,119.07
  6. Step 6: Final answer
    x = 13,181.22

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1.5x scale

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.