Home / 20,684.13-31,025.50-11,328.56

Finding the Fourth Proportional to 20,684.13, 31,025.50 and 11,328.56

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Solution

The fourth proportional to 20,684.13, 31,025.50 and 11,328.56 is: 16,992.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.13 : 31,025.50 = 11,328.56 : x
  2. Step 2: Convert to fraction form
    20,684.13/31,025.50 = 11,328.56/x
  3. Step 3: Cross multiply
    20,684.13x = 31,025.50 × 11,328.56
  4. Step 4: Simplify right side
    20,684.13x = 351,474,171.18
  5. Step 5: Solve for x
    x = 351,474,171.18/20,684.13
  6. Step 6: Final answer
    x = 16,992.46

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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.