Home / 15,644.90-21,589.83-8,474.65

Finding the Fourth Proportional to 15,644.90, 21,589.83 and 8,474.65

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Solution

The fourth proportional to 15,644.90, 21,589.83 and 8,474.65 is: 11,694.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.90 : 21,589.83 = 8,474.65 : x
  2. Step 2: Convert to fraction form
    15,644.90/21,589.83 = 8,474.65/x
  3. Step 3: Cross multiply
    15,644.90x = 21,589.83 × 8,474.65
  4. Step 4: Simplify right side
    15,644.90x = 182,966,198.83
  5. Step 5: Solve for x
    x = 182,966,198.83/15,644.90
  6. Step 6: Final answer
    x = 11,694.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.