Home / 15,474.42-21,354.68-8,400.84

Finding the Fourth Proportional to 15,474.42, 21,354.68 and 8,400.84

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Solution

The fourth proportional to 15,474.42, 21,354.68 and 8,400.84 is: 11,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.42 : 21,354.68 = 8,400.84 : x
  2. Step 2: Convert to fraction form
    15,474.42/21,354.68 = 8,400.84/x
  3. Step 3: Cross multiply
    15,474.42x = 21,354.68 × 8,400.84
  4. Step 4: Simplify right side
    15,474.42x = 179,397,249.93
  5. Step 5: Solve for x
    x = 179,397,249.93/15,474.42
  6. Step 6: Final answer
    x = 11,593.15

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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.