Home / 20,185.13-30,283.85-10,331.39

Finding the Fourth Proportional to 20,185.13, 30,283.85 and 10,331.39

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Solution

The fourth proportional to 20,185.13, 30,283.85 and 10,331.39 is: 15,500.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.13 : 30,283.85 = 10,331.39 : x
  2. Step 2: Convert to fraction form
    20,185.13/30,283.85 = 10,331.39/x
  3. Step 3: Cross multiply
    20,185.13x = 30,283.85 × 10,331.39
  4. Step 4: Simplify right side
    20,185.13x = 312,874,139.46
  5. Step 5: Solve for x
    x = 312,874,139.46/20,185.13
  6. Step 6: Final answer
    x = 15,500.23

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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.