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Finding the Fourth Proportional to 36,439, 50,277.18 and 20,520.28

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Solution

The fourth proportional to 36,439, 50,277.18 and 20,520.28 is: 28,313.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,439 : 50,277.18 = 20,520.28 : x
  2. Step 2: Convert to fraction form
    36,439/50,277.18 = 20,520.28/x
  3. Step 3: Cross multiply
    36,439x = 50,277.18 × 20,520.28
  4. Step 4: Simplify right side
    36,439x = 1,031,701,811.21
  5. Step 5: Solve for x
    x = 1,031,701,811.21/36,439
  6. Step 6: Final answer
    x = 28,313.12

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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.