Home / 21,187.07-31,780.83-6,396.11

Finding the Fourth Proportional to 21,187.07, 31,780.83 and 6,396.11

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Solution

The fourth proportional to 21,187.07, 31,780.83 and 6,396.11 is: 9,594.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.07 : 31,780.83 = 6,396.11 : x
  2. Step 2: Convert to fraction form
    21,187.07/31,780.83 = 6,396.11/x
  3. Step 3: Cross multiply
    21,187.07x = 31,780.83 × 6,396.11
  4. Step 4: Simplify right side
    21,187.07x = 203,273,684.57
  5. Step 5: Solve for x
    x = 203,273,684.57/21,187.07
  6. Step 6: Final answer
    x = 9,594.23

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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.