Home / 21,293.09-31,943.51-8,806.34

Finding the Fourth Proportional to 21,293.09, 31,943.51 and 8,806.34

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Solution

The fourth proportional to 21,293.09, 31,943.51 and 8,806.34 is: 13,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,293.09 : 31,943.51 = 8,806.34 : x
  2. Step 2: Convert to fraction form
    21,293.09/31,943.51 = 8,806.34/x
  3. Step 3: Cross multiply
    21,293.09x = 31,943.51 × 8,806.34
  4. Step 4: Simplify right side
    21,293.09x = 281,305,272.15
  5. Step 5: Solve for x
    x = 281,305,272.15/21,293.09
  6. Step 6: Final answer
    x = 13,211.10

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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.