Home / 21,186.20-31,779.54-6,395.26

Finding the Fourth Proportional to 21,186.20, 31,779.54 and 6,395.26

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Solution

The fourth proportional to 21,186.20, 31,779.54 and 6,395.26 is: 9,592.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.20 : 31,779.54 = 6,395.26 : x
  2. Step 2: Convert to fraction form
    21,186.20/31,779.54 = 6,395.26/x
  3. Step 3: Cross multiply
    21,186.20x = 31,779.54 × 6,395.26
  4. Step 4: Simplify right side
    21,186.20x = 203,238,420.98
  5. Step 5: Solve for x
    x = 203,238,420.98/21,186.20
  6. Step 6: Final answer
    x = 9,592.96

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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.