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Finding the Fourth Proportional to 36,306.40, 50,107.76 and 20,391.76

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Solution

The fourth proportional to 36,306.40, 50,107.76 and 20,391.76 is: 28,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,306.40 : 50,107.76 = 20,391.76 : x
  2. Step 2: Convert to fraction form
    36,306.40/50,107.76 = 20,391.76/x
  3. Step 3: Cross multiply
    36,306.40x = 50,107.76 × 20,391.76
  4. Step 4: Simplify right side
    36,306.40x = 1,021,785,416.06
  5. Step 5: Solve for x
    x = 1,021,785,416.06/36,306.40
  6. Step 6: Final answer
    x = 28,143.40

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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.