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Finding the Fourth Proportional to 12,391.68, 18,573.48 and 6,156.04

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Solution

The fourth proportional to 12,391.68, 18,573.48 and 6,156.04 is: 9,227.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.68 : 18,573.48 = 6,156.04 : x
  2. Step 2: Convert to fraction form
    12,391.68/18,573.48 = 6,156.04/x
  3. Step 3: Cross multiply
    12,391.68x = 18,573.48 × 6,156.04
  4. Step 4: Simplify right side
    12,391.68x = 114,339,085.82
  5. Step 5: Solve for x
    x = 114,339,085.82/12,391.68
  6. Step 6: Final answer
    x = 9,227.09

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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.