Home / 21,230.24-31,845.60-6,439.04

Finding the Fourth Proportional to 21,230.24, 31,845.60 and 6,439.04

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Solution

The fourth proportional to 21,230.24, 31,845.60 and 6,439.04 is: 9,658.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.24 : 31,845.60 = 6,439.04 : x
  2. Step 2: Convert to fraction form
    21,230.24/31,845.60 = 6,439.04/x
  3. Step 3: Cross multiply
    21,230.24x = 31,845.60 × 6,439.04
  4. Step 4: Simplify right side
    21,230.24x = 205,055,092.22
  5. Step 5: Solve for x
    x = 205,055,092.22/21,230.24
  6. Step 6: Final answer
    x = 9,658.63

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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.