Home / 14,278.18-19,704.15-7,990.54

Finding the Fourth Proportional to 14,278.18, 19,704.15 and 7,990.54

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Solution

The fourth proportional to 14,278.18, 19,704.15 and 7,990.54 is: 11,027.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.18 : 19,704.15 = 7,990.54 : x
  2. Step 2: Convert to fraction form
    14,278.18/19,704.15 = 7,990.54/x
  3. Step 3: Cross multiply
    14,278.18x = 19,704.15 × 7,990.54
  4. Step 4: Simplify right side
    14,278.18x = 157,446,798.74
  5. Step 5: Solve for x
    x = 157,446,798.74/14,278.18
  6. Step 6: Final answer
    x = 11,027.09

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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.