Home / 21,231.15-31,846.84-6,440.08

Finding the Fourth Proportional to 21,231.15, 31,846.84 and 6,440.08

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Solution

The fourth proportional to 21,231.15, 31,846.84 and 6,440.08 is: 9,660.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.15 : 31,846.84 = 6,440.08 : x
  2. Step 2: Convert to fraction form
    21,231.15/31,846.84 = 6,440.08/x
  3. Step 3: Cross multiply
    21,231.15x = 31,846.84 × 6,440.08
  4. Step 4: Simplify right side
    21,231.15x = 205,096,181.25
  5. Step 5: Solve for x
    x = 205,096,181.25/21,231.15
  6. Step 6: Final answer
    x = 9,660.16

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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.