Home / 21,632.92-29,809.11-15,958.65

Finding the Fourth Proportional to 21,632.92, 29,809.11 and 15,958.65

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Solution

The fourth proportional to 21,632.92, 29,809.11 and 15,958.65 is: 21,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.92 : 29,809.11 = 15,958.65 : x
  2. Step 2: Convert to fraction form
    21,632.92/29,809.11 = 15,958.65/x
  3. Step 3: Cross multiply
    21,632.92x = 29,809.11 × 15,958.65
  4. Step 4: Simplify right side
    21,632.92x = 475,713,073.42
  5. Step 5: Solve for x
    x = 475,713,073.42/21,632.92
  6. Step 6: Final answer
    x = 21,990.24

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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.