Home / 21,269.13-31,908.33-8,125.26

Finding the Fourth Proportional to 21,269.13, 31,908.33 and 8,125.26

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Solution

The fourth proportional to 21,269.13, 31,908.33 and 8,125.26 is: 12,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.13 : 31,908.33 = 8,125.26 : x
  2. Step 2: Convert to fraction form
    21,269.13/31,908.33 = 8,125.26/x
  3. Step 3: Cross multiply
    21,269.13x = 31,908.33 × 8,125.26
  4. Step 4: Simplify right side
    21,269.13x = 259,263,477.42
  5. Step 5: Solve for x
    x = 259,263,477.42/21,269.13
  6. Step 6: Final answer
    x = 12,189.66

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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.