Home / 21,094.33-31,625.87-12,772.39

Finding the Fourth Proportional to 21,094.33, 31,625.87 and 12,772.39

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Solution

The fourth proportional to 21,094.33, 31,625.87 and 12,772.39 is: 19,149.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,094.33 : 31,625.87 = 12,772.39 : x
  2. Step 2: Convert to fraction form
    21,094.33/31,625.87 = 12,772.39/x
  3. Step 3: Cross multiply
    21,094.33x = 31,625.87 × 12,772.39
  4. Step 4: Simplify right side
    21,094.33x = 403,937,977.66
  5. Step 5: Solve for x
    x = 403,937,977.66/21,094.33
  6. Step 6: Final answer
    x = 19,149.13

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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.