Home / 21,217.02-31,777.08-10,131.54

Finding the Fourth Proportional to 21,217.02, 31,777.08 and 10,131.54

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Solution

The fourth proportional to 21,217.02, 31,777.08 and 10,131.54 is: 15,174.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.02 : 31,777.08 = 10,131.54 : x
  2. Step 2: Convert to fraction form
    21,217.02/31,777.08 = 10,131.54/x
  3. Step 3: Cross multiply
    21,217.02x = 31,777.08 × 10,131.54
  4. Step 4: Simplify right side
    21,217.02x = 321,950,757.10
  5. Step 5: Solve for x
    x = 321,950,757.10/21,217.02
  6. Step 6: Final answer
    x = 15,174.17

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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.