Home / 14,278.39-19,704.20-7,990.77

Finding the Fourth Proportional to 14,278.39, 19,704.20 and 7,990.77

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Solution

The fourth proportional to 14,278.39, 19,704.20 and 7,990.77 is: 11,027.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.39 : 19,704.20 = 7,990.77 : x
  2. Step 2: Convert to fraction form
    14,278.39/19,704.20 = 7,990.77/x
  3. Step 3: Cross multiply
    14,278.39x = 19,704.20 × 7,990.77
  4. Step 4: Simplify right side
    14,278.39x = 157,451,730.23
  5. Step 5: Solve for x
    x = 157,451,730.23/14,278.39
  6. Step 6: Final answer
    x = 11,027.27

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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.