Home / 21,991.62-30,352.50-12,560.18

Finding the Fourth Proportional to 21,991.62, 30,352.50 and 12,560.18

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Solution

The fourth proportional to 21,991.62, 30,352.50 and 12,560.18 is: 17,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,991.62 : 30,352.50 = 12,560.18 : x
  2. Step 2: Convert to fraction form
    21,991.62/30,352.50 = 12,560.18/x
  3. Step 3: Cross multiply
    21,991.62x = 30,352.50 × 12,560.18
  4. Step 4: Simplify right side
    21,991.62x = 381,232,847.09
  5. Step 5: Solve for x
    x = 381,232,847.09/21,991.62
  6. Step 6: Final answer
    x = 17,335.37

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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.