Home / 31,108.13-42,929.24-16,961.03

Finding the Fourth Proportional to 31,108.13, 42,929.24 and 16,961.03

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Solution

The fourth proportional to 31,108.13, 42,929.24 and 16,961.03 is: 23,406.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.13 : 42,929.24 = 16,961.03 : x
  2. Step 2: Convert to fraction form
    31,108.13/42,929.24 = 16,961.03/x
  3. Step 3: Cross multiply
    31,108.13x = 42,929.24 × 16,961.03
  4. Step 4: Simplify right side
    31,108.13x = 728,123,828.07
  5. Step 5: Solve for x
    x = 728,123,828.07/31,108.13
  6. Step 6: Final answer
    x = 23,406.23

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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.