Home / 23,020.80-31,771.50-12,949.66

Finding the Fourth Proportional to 23,020.80, 31,771.50 and 12,949.66

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Solution

The fourth proportional to 23,020.80, 31,771.50 and 12,949.66 is: 17,872.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,020.80 : 31,771.50 = 12,949.66 : x
  2. Step 2: Convert to fraction form
    23,020.80/31,771.50 = 12,949.66/x
  3. Step 3: Cross multiply
    23,020.80x = 31,771.50 × 12,949.66
  4. Step 4: Simplify right side
    23,020.80x = 411,430,122.69
  5. Step 5: Solve for x
    x = 411,430,122.69/23,020.80
  6. Step 6: Final answer
    x = 17,872.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.