Home / 21,232.43-31,849.45-7,908.79

Finding the Fourth Proportional to 21,232.43, 31,849.45 and 7,908.79

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Solution

The fourth proportional to 21,232.43, 31,849.45 and 7,908.79 is: 11,863.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,232.43 : 31,849.45 = 7,908.79 : x
  2. Step 2: Convert to fraction form
    21,232.43/31,849.45 = 7,908.79/x
  3. Step 3: Cross multiply
    21,232.43x = 31,849.45 × 7,908.79
  4. Step 4: Simplify right side
    21,232.43x = 251,890,616.47
  5. Step 5: Solve for x
    x = 251,890,616.47/21,232.43
  6. Step 6: Final answer
    x = 11,863.49

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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.