Home / 21,993.90-30,351.20-12,433.62

Finding the Fourth Proportional to 21,993.90, 30,351.20 and 12,433.62

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Solution

The fourth proportional to 21,993.90, 30,351.20 and 12,433.62 is: 17,158.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.90 : 30,351.20 = 12,433.62 : x
  2. Step 2: Convert to fraction form
    21,993.90/30,351.20 = 12,433.62/x
  3. Step 3: Cross multiply
    21,993.90x = 30,351.20 × 12,433.62
  4. Step 4: Simplify right side
    21,993.90x = 377,375,287.34
  5. Step 5: Solve for x
    x = 377,375,287.34/21,993.90
  6. Step 6: Final answer
    x = 17,158.18

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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.