Home / 21,049.52-31,546.94-8,555.00

Finding the Fourth Proportional to 21,049.52, 31,546.94 and 8,555.00

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Solution

The fourth proportional to 21,049.52, 31,546.94 and 8,555.00 is: 12,821.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.52 : 31,546.94 = 8,555.00 : x
  2. Step 2: Convert to fraction form
    21,049.52/31,546.94 = 8,555.00/x
  3. Step 3: Cross multiply
    21,049.52x = 31,546.94 × 8,555.00
  4. Step 4: Simplify right side
    21,049.52x = 269,884,048.64
  5. Step 5: Solve for x
    x = 269,884,048.64/21,049.52
  6. Step 6: Final answer
    x = 12,821.39

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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.