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Finding the Fourth Proportional to 11,260.53, 16,860.02 and 8,143.65

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Solution

The fourth proportional to 11,260.53, 16,860.02 and 8,143.65 is: 12,193.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,260.53 : 16,860.02 = 8,143.65 : x
  2. Step 2: Convert to fraction form
    11,260.53/16,860.02 = 8,143.65/x
  3. Step 3: Cross multiply
    11,260.53x = 16,860.02 × 8,143.65
  4. Step 4: Simplify right side
    11,260.53x = 137,302,061.15
  5. Step 5: Solve for x
    x = 137,302,061.15/11,260.53
  6. Step 6: Final answer
    x = 12,193.21

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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.