Home / 20,945.57-31,440.73-8,473.74

Finding the Fourth Proportional to 20,945.57, 31,440.73 and 8,473.74

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Solution

The fourth proportional to 20,945.57, 31,440.73 and 8,473.74 is: 12,719.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.57 : 31,440.73 = 8,473.74 : x
  2. Step 2: Convert to fraction form
    20,945.57/31,440.73 = 8,473.74/x
  3. Step 3: Cross multiply
    20,945.57x = 31,440.73 × 8,473.74
  4. Step 4: Simplify right side
    20,945.57x = 266,420,571.43
  5. Step 5: Solve for x
    x = 266,420,571.43/20,945.57
  6. Step 6: Final answer
    x = 12,719.66

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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.