Home / 21,993.75-30,351.42-12,562.29

Finding the Fourth Proportional to 21,993.75, 30,351.42 and 12,562.29

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Solution

The fourth proportional to 21,993.75, 30,351.42 and 12,562.29 is: 17,335.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.75 : 30,351.42 = 12,562.29 : x
  2. Step 2: Convert to fraction form
    21,993.75/30,351.42 = 12,562.29/x
  3. Step 3: Cross multiply
    21,993.75x = 30,351.42 × 12,562.29
  4. Step 4: Simplify right side
    21,993.75x = 381,283,339.95
  5. Step 5: Solve for x
    x = 381,283,339.95/21,993.75
  6. Step 6: Final answer
    x = 17,335.99

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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.