Home / 21,317.87-29,414.17-15,362.75

Finding the Fourth Proportional to 21,317.87, 29,414.17 and 15,362.75

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Solution

The fourth proportional to 21,317.87, 29,414.17 and 15,362.75 is: 21,197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317.87 : 29,414.17 = 15,362.75 : x
  2. Step 2: Convert to fraction form
    21,317.87/29,414.17 = 15,362.75/x
  3. Step 3: Cross multiply
    21,317.87x = 29,414.17 × 15,362.75
  4. Step 4: Simplify right side
    21,317.87x = 451,882,632.91
  5. Step 5: Solve for x
    x = 451,882,632.91/21,317.87
  6. Step 6: Final answer
    x = 21,197.36

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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.