Home / 20,517.36-30,765-10,632.12

Finding the Fourth Proportional to 20,517.36, 30,765 and 10,632.12

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Solution

The fourth proportional to 20,517.36, 30,765 and 10,632.12 is: 15,942.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.36 : 30,765 = 10,632.12 : x
  2. Step 2: Convert to fraction form
    20,517.36/30,765 = 10,632.12/x
  3. Step 3: Cross multiply
    20,517.36x = 30,765 × 10,632.12
  4. Step 4: Simplify right side
    20,517.36x = 327,097,171.80
  5. Step 5: Solve for x
    x = 327,097,171.80/20,517.36
  6. Step 6: Final answer
    x = 15,942.46

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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.