Home / 20,431.85-30,632.19-10,564.83

Finding the Fourth Proportional to 20,431.85, 30,632.19 and 10,564.83

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Solution

The fourth proportional to 20,431.85, 30,632.19 and 10,564.83 is: 15,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.85 : 30,632.19 = 10,564.83 : x
  2. Step 2: Convert to fraction form
    20,431.85/30,632.19 = 10,564.83/x
  3. Step 3: Cross multiply
    20,431.85x = 30,632.19 × 10,564.83
  4. Step 4: Simplify right side
    20,431.85x = 323,623,879.88
  5. Step 5: Solve for x
    x = 323,623,879.88/20,431.85
  6. Step 6: Final answer
    x = 15,839.19

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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.