Home / 20,846.16-31,255.29-11,490.66

Finding the Fourth Proportional to 20,846.16, 31,255.29 and 11,490.66

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Solution

The fourth proportional to 20,846.16, 31,255.29 and 11,490.66 is: 17,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.16 : 31,255.29 = 11,490.66 : x
  2. Step 2: Convert to fraction form
    20,846.16/31,255.29 = 11,490.66/x
  3. Step 3: Cross multiply
    20,846.16x = 31,255.29 × 11,490.66
  4. Step 4: Simplify right side
    20,846.16x = 359,143,910.59
  5. Step 5: Solve for x
    x = 359,143,910.59/20,846.16
  6. Step 6: Final answer
    x = 17,228.30

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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.