Home / 15,747.15-21,728.84-8,674.02

Finding the Fourth Proportional to 15,747.15, 21,728.84 and 8,674.02

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Solution

The fourth proportional to 15,747.15, 21,728.84 and 8,674.02 is: 11,968.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,747.15 : 21,728.84 = 8,674.02 : x
  2. Step 2: Convert to fraction form
    15,747.15/21,728.84 = 8,674.02/x
  3. Step 3: Cross multiply
    15,747.15x = 21,728.84 × 8,674.02
  4. Step 4: Simplify right side
    15,747.15x = 188,476,349.37
  5. Step 5: Solve for x
    x = 188,476,349.37/15,747.15
  6. Step 6: Final answer
    x = 11,968.92

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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.