Home / 13,934.88-20,902.20-11,178.84

Finding the Fourth Proportional to 13,934.88, 20,902.20 and 11,178.84

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Solution

The fourth proportional to 13,934.88, 20,902.20 and 11,178.84 is: 16,768.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,934.88 : 20,902.20 = 11,178.84 : x
  2. Step 2: Convert to fraction form
    13,934.88/20,902.20 = 11,178.84/x
  3. Step 3: Cross multiply
    13,934.88x = 20,902.20 × 11,178.84
  4. Step 4: Simplify right side
    13,934.88x = 233,662,349.45
  5. Step 5: Solve for x
    x = 233,662,349.45/13,934.88
  6. Step 6: Final answer
    x = 16,768.16

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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.