Home / 21,186.38-31,779.79-6,395.42

Finding the Fourth Proportional to 21,186.38, 31,779.79 and 6,395.42

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Solution

The fourth proportional to 21,186.38, 31,779.79 and 6,395.42 is: 9,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.38 : 31,779.79 = 6,395.42 : x
  2. Step 2: Convert to fraction form
    21,186.38/31,779.79 = 6,395.42/x
  3. Step 3: Cross multiply
    21,186.38x = 31,779.79 × 6,395.42
  4. Step 4: Simplify right side
    21,186.38x = 203,245,204.00
  5. Step 5: Solve for x
    x = 203,245,204.00/21,186.38
  6. Step 6: Final answer
    x = 9,593.20

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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.