Home / 20,937.78-31,409.64-6,144.66

Finding the Fourth Proportional to 20,937.78, 31,409.64 and 6,144.66

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Solution

The fourth proportional to 20,937.78, 31,409.64 and 6,144.66 is: 9,217.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.78 : 31,409.64 = 6,144.66 : x
  2. Step 2: Convert to fraction form
    20,937.78/31,409.64 = 6,144.66/x
  3. Step 3: Cross multiply
    20,937.78x = 31,409.64 × 6,144.66
  4. Step 4: Simplify right side
    20,937.78x = 193,001,558.52
  5. Step 5: Solve for x
    x = 193,001,558.52/20,937.78
  6. Step 6: Final answer
    x = 9,217.86

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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.