Home / 21,020.11-31,529.25-5,224.80

Finding the Fourth Proportional to 21,020.11, 31,529.25 and 5,224.80

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Solution

The fourth proportional to 21,020.11, 31,529.25 and 5,224.80 is: 7,836.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.11 : 31,529.25 = 5,224.80 : x
  2. Step 2: Convert to fraction form
    21,020.11/31,529.25 = 5,224.80/x
  3. Step 3: Cross multiply
    21,020.11x = 31,529.25 × 5,224.80
  4. Step 4: Simplify right side
    21,020.11x = 164,734,143.63
  5. Step 5: Solve for x
    x = 164,734,143.63/21,020.11
  6. Step 6: Final answer
    x = 7,836.98

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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.