Home / 21,186.42-31,779.84-6,395.46

Finding the Fourth Proportional to 21,186.42, 31,779.84 and 6,395.46

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Solution

The fourth proportional to 21,186.42, 31,779.84 and 6,395.46 is: 9,593.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.42 : 31,779.84 = 6,395.46 : x
  2. Step 2: Convert to fraction form
    21,186.42/31,779.84 = 6,395.46/x
  3. Step 3: Cross multiply
    21,186.42x = 31,779.84 × 6,395.46
  4. Step 4: Simplify right side
    21,186.42x = 203,246,695.53
  5. Step 5: Solve for x
    x = 203,246,695.53/21,186.42
  6. Step 6: Final answer
    x = 9,593.25

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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.