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Finding the Fourth Proportional to 30,604.83, 42,223.83 and 20,000.61

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Solution

The fourth proportional to 30,604.83, 42,223.83 and 20,000.61 is: 27,593.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,604.83 : 42,223.83 = 20,000.61 : x
  2. Step 2: Convert to fraction form
    30,604.83/42,223.83 = 20,000.61/x
  3. Step 3: Cross multiply
    30,604.83x = 42,223.83 × 20,000.61
  4. Step 4: Simplify right side
    30,604.83x = 844,502,356.54
  5. Step 5: Solve for x
    x = 844,502,356.54/30,604.83
  6. Step 6: Final answer
    x = 27,593.76

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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.