Home / 20,941.86-31,389.38-9,081.94

Finding the Fourth Proportional to 20,941.86, 31,389.38 and 9,081.94

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Solution

The fourth proportional to 20,941.86, 31,389.38 and 9,081.94 is: 13,612.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,941.86 : 31,389.38 = 9,081.94 : x
  2. Step 2: Convert to fraction form
    20,941.86/31,389.38 = 9,081.94/x
  3. Step 3: Cross multiply
    20,941.86x = 31,389.38 × 9,081.94
  4. Step 4: Simplify right side
    20,941.86x = 285,076,465.80
  5. Step 5: Solve for x
    x = 285,076,465.80/20,941.86
  6. Step 6: Final answer
    x = 13,612.76

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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.