Home / 14,278.68-19,704.84-7,991.04

Finding the Fourth Proportional to 14,278.68, 19,704.84 and 7,991.04

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Solution

The fourth proportional to 14,278.68, 19,704.84 and 7,991.04 is: 11,027.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.68 : 19,704.84 = 7,991.04 : x
  2. Step 2: Convert to fraction form
    14,278.68/19,704.84 = 7,991.04/x
  3. Step 3: Cross multiply
    14,278.68x = 19,704.84 × 7,991.04
  4. Step 4: Simplify right side
    14,278.68x = 157,462,164.63
  5. Step 5: Solve for x
    x = 157,462,164.63/14,278.68
  6. Step 6: Final answer
    x = 11,027.78

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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.