Home / 31,108.53-42,930.21-16,961.37

Finding the Fourth Proportional to 31,108.53, 42,930.21 and 16,961.37

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Solution

The fourth proportional to 31,108.53, 42,930.21 and 16,961.37 is: 23,406.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.53 : 42,930.21 = 16,961.37 : x
  2. Step 2: Convert to fraction form
    31,108.53/42,930.21 = 16,961.37/x
  3. Step 3: Cross multiply
    31,108.53x = 42,930.21 × 16,961.37
  4. Step 4: Simplify right side
    31,108.53x = 728,155,175.99
  5. Step 5: Solve for x
    x = 728,155,175.99/31,108.53
  6. Step 6: Final answer
    x = 23,406.93

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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.