Home / 21,266.74-31,907.27-9,418.87

Finding the Fourth Proportional to 21,266.74, 31,907.27 and 9,418.87

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Solution

The fourth proportional to 21,266.74, 31,907.27 and 9,418.87 is: 14,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.74 : 31,907.27 = 9,418.87 : x
  2. Step 2: Convert to fraction form
    21,266.74/31,907.27 = 9,418.87/x
  3. Step 3: Cross multiply
    21,266.74x = 31,907.27 × 9,418.87
  4. Step 4: Simplify right side
    21,266.74x = 300,530,428.18
  5. Step 5: Solve for x
    x = 300,530,428.18/21,266.74
  6. Step 6: Final answer
    x = 14,131.48

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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.