Home / 21,247.20-31,872.80-6,254.33

Finding the Fourth Proportional to 21,247.20, 31,872.80 and 6,254.33

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Solution

The fourth proportional to 21,247.20, 31,872.80 and 6,254.33 is: 9,382.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.20 : 31,872.80 = 6,254.33 : x
  2. Step 2: Convert to fraction form
    21,247.20/31,872.80 = 6,254.33/x
  3. Step 3: Cross multiply
    21,247.20x = 31,872.80 × 6,254.33
  4. Step 4: Simplify right side
    21,247.20x = 199,342,985.02
  5. Step 5: Solve for x
    x = 199,342,985.02/21,247.20
  6. Step 6: Final answer
    x = 9,382.08

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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.