Home / 20,839.08-31,246.29-8,364.99

Finding the Fourth Proportional to 20,839.08, 31,246.29 and 8,364.99

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Solution

The fourth proportional to 20,839.08, 31,246.29 and 8,364.99 is: 12,542.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.08 : 31,246.29 = 8,364.99 : x
  2. Step 2: Convert to fraction form
    20,839.08/31,246.29 = 8,364.99/x
  3. Step 3: Cross multiply
    20,839.08x = 31,246.29 × 8,364.99
  4. Step 4: Simplify right side
    20,839.08x = 261,374,903.39
  5. Step 5: Solve for x
    x = 261,374,903.39/20,839.08
  6. Step 6: Final answer
    x = 12,542.54

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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.