Home / 15,449-21,318.78-8,734.22

Finding the Fourth Proportional to 15,449, 21,318.78 and 8,734.22

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Solution

The fourth proportional to 15,449, 21,318.78 and 8,734.22 is: 12,052.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449 : 21,318.78 = 8,734.22 : x
  2. Step 2: Convert to fraction form
    15,449/21,318.78 = 8,734.22/x
  3. Step 3: Cross multiply
    15,449x = 21,318.78 × 8,734.22
  4. Step 4: Simplify right side
    15,449x = 186,202,914.65
  5. Step 5: Solve for x
    x = 186,202,914.65/15,449
  6. Step 6: Final answer
    x = 12,052.75

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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.