Home / 20,933.64-31,403.88-6,143.04

Finding the Fourth Proportional to 20,933.64, 31,403.88 and 6,143.04

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Solution

The fourth proportional to 20,933.64, 31,403.88 and 6,143.04 is: 9,215.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.64 : 31,403.88 = 6,143.04 : x
  2. Step 2: Convert to fraction form
    20,933.64/31,403.88 = 6,143.04/x
  3. Step 3: Cross multiply
    20,933.64x = 31,403.88 × 6,143.04
  4. Step 4: Simplify right side
    20,933.64x = 192,915,291.00
  5. Step 5: Solve for x
    x = 192,915,291.00/20,933.64
  6. Step 6: Final answer
    x = 9,215.56

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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.