Home / 21,982.24-30,331.02-13,025.80

Finding the Fourth Proportional to 21,982.24, 30,331.02 and 13,025.80

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Solution

The fourth proportional to 21,982.24, 30,331.02 and 13,025.80 is: 17,972.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.24 : 30,331.02 = 13,025.80 : x
  2. Step 2: Convert to fraction form
    21,982.24/30,331.02 = 13,025.80/x
  3. Step 3: Cross multiply
    21,982.24x = 30,331.02 × 13,025.80
  4. Step 4: Simplify right side
    21,982.24x = 395,085,800.32
  5. Step 5: Solve for x
    x = 395,085,800.32/21,982.24
  6. Step 6: Final answer
    x = 17,972.95

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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.