Home / 20,933.24-31,405.32-6,895.40

Finding the Fourth Proportional to 20,933.24, 31,405.32 and 6,895.40

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Solution

The fourth proportional to 20,933.24, 31,405.32 and 6,895.40 is: 10,344.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.24 : 31,405.32 = 6,895.40 : x
  2. Step 2: Convert to fraction form
    20,933.24/31,405.32 = 6,895.40/x
  3. Step 3: Cross multiply
    20,933.24x = 31,405.32 × 6,895.40
  4. Step 4: Simplify right side
    20,933.24x = 216,552,086.50
  5. Step 5: Solve for x
    x = 216,552,086.50/20,933.24
  6. Step 6: Final answer
    x = 10,344.89

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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.