Home / 36,306.60-50,102.79-20,390.70

Finding the Fourth Proportional to 36,306.60, 50,102.79 and 20,390.70

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Solution

The fourth proportional to 36,306.60, 50,102.79 and 20,390.70 is: 28,138.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,306.60 : 50,102.79 = 20,390.70 : x
  2. Step 2: Convert to fraction form
    36,306.60/50,102.79 = 20,390.70/x
  3. Step 3: Cross multiply
    36,306.60x = 50,102.79 × 20,390.70
  4. Step 4: Simplify right side
    36,306.60x = 1,021,631,071.47
  5. Step 5: Solve for x
    x = 1,021,631,071.47/36,306.60
  6. Step 6: Final answer
    x = 28,138.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.