Home / 21,994.74-30,356.78-13,047.48

Finding the Fourth Proportional to 21,994.74, 30,356.78 and 13,047.48

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Solution

The fourth proportional to 21,994.74, 30,356.78 and 13,047.48 is: 18,007.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,994.74 : 30,356.78 = 13,047.48 : x
  2. Step 2: Convert to fraction form
    21,994.74/30,356.78 = 13,047.48/x
  3. Step 3: Cross multiply
    21,994.74x = 30,356.78 × 13,047.48
  4. Step 4: Simplify right side
    21,994.74x = 396,079,414.68
  5. Step 5: Solve for x
    x = 396,079,414.68/21,994.74
  6. Step 6: Final answer
    x = 18,007.92

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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.