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Finding the Fourth Proportional to 11,821.65, 17,717.40 and 6,277.65

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Solution

The fourth proportional to 11,821.65, 17,717.40 and 6,277.65 is: 9,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.65 : 17,717.40 = 6,277.65 : x
  2. Step 2: Convert to fraction form
    11,821.65/17,717.40 = 6,277.65/x
  3. Step 3: Cross multiply
    11,821.65x = 17,717.40 × 6,277.65
  4. Step 4: Simplify right side
    11,821.65x = 111,223,636.11
  5. Step 5: Solve for x
    x = 111,223,636.11/11,821.65
  6. Step 6: Final answer
    x = 9,408.47

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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.