Home / 21,054.22-31,576.98-7,906.30

Finding the Fourth Proportional to 21,054.22, 31,576.98 and 7,906.30

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Solution

The fourth proportional to 21,054.22, 31,576.98 and 7,906.30 is: 11,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.22 : 31,576.98 = 7,906.30 : x
  2. Step 2: Convert to fraction form
    21,054.22/31,576.98 = 7,906.30/x
  3. Step 3: Cross multiply
    21,054.22x = 31,576.98 × 7,906.30
  4. Step 4: Simplify right side
    21,054.22x = 249,657,076.97
  5. Step 5: Solve for x
    x = 249,657,076.97/21,054.22
  6. Step 6: Final answer
    x = 11,857.82

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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.