Home / 14,278.92-19,704.78-7,991.36

Finding the Fourth Proportional to 14,278.92, 19,704.78 and 7,991.36

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Solution

The fourth proportional to 14,278.92, 19,704.78 and 7,991.36 is: 11,028.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.92 : 19,704.78 = 7,991.36 : x
  2. Step 2: Convert to fraction form
    14,278.92/19,704.78 = 7,991.36/x
  3. Step 3: Cross multiply
    14,278.92x = 19,704.78 × 7,991.36
  4. Step 4: Simplify right side
    14,278.92x = 157,467,990.70
  5. Step 5: Solve for x
    x = 157,467,990.70/14,278.92
  6. Step 6: Final answer
    x = 11,028.00

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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.