Home / 14,147.73-21,221.71-4,287.78

Finding the Fourth Proportional to 14,147.73, 21,221.71 and 4,287.78

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Solution

The fourth proportional to 14,147.73, 21,221.71 and 4,287.78 is: 6,431.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,147.73 : 21,221.71 = 4,287.78 : x
  2. Step 2: Convert to fraction form
    14,147.73/21,221.71 = 4,287.78/x
  3. Step 3: Cross multiply
    14,147.73x = 21,221.71 × 4,287.78
  4. Step 4: Simplify right side
    14,147.73x = 90,994,012.98
  5. Step 5: Solve for x
    x = 90,994,012.98/14,147.73
  6. Step 6: Final answer
    x = 6,431.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.