Home / 20,874.66-31,313.47-8,394.75

Finding the Fourth Proportional to 20,874.66, 31,313.47 and 8,394.75

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Solution

The fourth proportional to 20,874.66, 31,313.47 and 8,394.75 is: 12,592.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.66 : 31,313.47 = 8,394.75 : x
  2. Step 2: Convert to fraction form
    20,874.66/31,313.47 = 8,394.75/x
  3. Step 3: Cross multiply
    20,874.66x = 31,313.47 × 8,394.75
  4. Step 4: Simplify right side
    20,874.66x = 262,868,752.28
  5. Step 5: Solve for x
    x = 262,868,752.28/20,874.66
  6. Step 6: Final answer
    x = 12,592.72

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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.