Home / 20,782.89-31,174.34-16,112.43

Finding the Fourth Proportional to 20,782.89, 31,174.34 and 16,112.43

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Solution

The fourth proportional to 20,782.89, 31,174.34 and 16,112.43 is: 24,168.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.89 : 31,174.34 = 16,112.43 : x
  2. Step 2: Convert to fraction form
    20,782.89/31,174.34 = 16,112.43/x
  3. Step 3: Cross multiply
    20,782.89x = 31,174.34 × 16,112.43
  4. Step 4: Simplify right side
    20,782.89x = 502,294,290.48
  5. Step 5: Solve for x
    x = 502,294,290.48/20,782.89
  6. Step 6: Final answer
    x = 24,168.65

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1.5x scale

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.