Home / 21,244.41-31,862.30-20,190.60

Finding the Fourth Proportional to 21,244.41, 31,862.30 and 20,190.60

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Solution

The fourth proportional to 21,244.41, 31,862.30 and 20,190.60 is: 30,281.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,244.41 : 31,862.30 = 20,190.60 : x
  2. Step 2: Convert to fraction form
    21,244.41/31,862.30 = 20,190.60/x
  3. Step 3: Cross multiply
    21,244.41x = 31,862.30 × 20,190.60
  4. Step 4: Simplify right side
    21,244.41x = 643,318,853.43
  5. Step 5: Solve for x
    x = 643,318,853.43/21,244.41
  6. Step 6: Final answer
    x = 30,281.79

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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.