Home / 20,937.78-31,409.56-6,144.62

Finding the Fourth Proportional to 20,937.78, 31,409.56 and 6,144.62

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Solution

The fourth proportional to 20,937.78, 31,409.56 and 6,144.62 is: 9,217.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.78 : 31,409.56 = 6,144.62 : x
  2. Step 2: Convert to fraction form
    20,937.78/31,409.56 = 6,144.62/x
  3. Step 3: Cross multiply
    20,937.78x = 31,409.56 × 6,144.62
  4. Step 4: Simplify right side
    20,937.78x = 192,999,810.57
  5. Step 5: Solve for x
    x = 192,999,810.57/20,937.78
  6. Step 6: Final answer
    x = 9,217.78

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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.