Home / 21,300.26-31,959.19-8,822.81

Finding the Fourth Proportional to 21,300.26, 31,959.19 and 8,822.81

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Solution

The fourth proportional to 21,300.26, 31,959.19 and 8,822.81 is: 13,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.26 : 31,959.19 = 8,822.81 : x
  2. Step 2: Convert to fraction form
    21,300.26/31,959.19 = 8,822.81/x
  3. Step 3: Cross multiply
    21,300.26x = 31,959.19 × 8,822.81
  4. Step 4: Simplify right side
    21,300.26x = 281,969,861.12
  5. Step 5: Solve for x
    x = 281,969,861.12/21,300.26
  6. Step 6: Final answer
    x = 13,237.86

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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.