Home / 21,191.06-31,774.23-6,395.54

Finding the Fourth Proportional to 21,191.06, 31,774.23 and 6,395.54

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Solution

The fourth proportional to 21,191.06, 31,774.23 and 6,395.54 is: 9,589.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.06 : 31,774.23 = 6,395.54 : x
  2. Step 2: Convert to fraction form
    21,191.06/31,774.23 = 6,395.54/x
  3. Step 3: Cross multiply
    21,191.06x = 31,774.23 × 6,395.54
  4. Step 4: Simplify right side
    21,191.06x = 203,213,358.93
  5. Step 5: Solve for x
    x = 203,213,358.93/21,191.06
  6. Step 6: Final answer
    x = 9,589.58

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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.