Home / 18,420.20-27,630.49-14,745.78

Finding the Fourth Proportional to 18,420.20, 27,630.49 and 14,745.78

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Solution

The fourth proportional to 18,420.20, 27,630.49 and 14,745.78 is: 22,118.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.20 : 27,630.49 = 14,745.78 : x
  2. Step 2: Convert to fraction form
    18,420.20/27,630.49 = 14,745.78/x
  3. Step 3: Cross multiply
    18,420.20x = 27,630.49 × 14,745.78
  4. Step 4: Simplify right side
    18,420.20x = 407,433,126.83
  5. Step 5: Solve for x
    x = 407,433,126.83/18,420.20
  6. Step 6: Final answer
    x = 22,118.82

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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.