Home / 13,934.43-20,905.29-8,085.42

Finding the Fourth Proportional to 13,934.43, 20,905.29 and 8,085.42

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Solution

The fourth proportional to 13,934.43, 20,905.29 and 8,085.42 is: 12,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,934.43 : 20,905.29 = 8,085.42 : x
  2. Step 2: Convert to fraction form
    13,934.43/20,905.29 = 8,085.42/x
  3. Step 3: Cross multiply
    13,934.43x = 20,905.29 × 8,085.42
  4. Step 4: Simplify right side
    13,934.43x = 169,028,049.87
  5. Step 5: Solve for x
    x = 169,028,049.87/13,934.43
  6. Step 6: Final answer
    x = 12,130.25

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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.