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Finding the Fourth Proportional to 10,369.65, 15,521.40 and 8,182.65

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Solution

The fourth proportional to 10,369.65, 15,521.40 and 8,182.65 is: 12,247.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369.65 : 15,521.40 = 8,182.65 : x
  2. Step 2: Convert to fraction form
    10,369.65/15,521.40 = 8,182.65/x
  3. Step 3: Cross multiply
    10,369.65x = 15,521.40 × 8,182.65
  4. Step 4: Simplify right side
    10,369.65x = 127,006,183.71
  5. Step 5: Solve for x
    x = 127,006,183.71/10,369.65
  6. Step 6: Final answer
    x = 12,247.88

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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.