Home / 11,695.65-17,549.40-5,121.90

Finding the Fourth Proportional to 11,695.65, 17,549.40 and 5,121.90

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Solution

The fourth proportional to 11,695.65, 17,549.40 and 5,121.90 is: 7,685.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,695.65 : 17,549.40 = 5,121.90 : x
  2. Step 2: Convert to fraction form
    11,695.65/17,549.40 = 5,121.90/x
  3. Step 3: Cross multiply
    11,695.65x = 17,549.40 × 5,121.90
  4. Step 4: Simplify right side
    11,695.65x = 89,886,271.86
  5. Step 5: Solve for x
    x = 89,886,271.86/11,695.65
  6. Step 6: Final answer
    x = 7,685.44

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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.