Home / 31,108.14-42,929.25-16,961.04

Finding the Fourth Proportional to 31,108.14, 42,929.25 and 16,961.04

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Solution

The fourth proportional to 31,108.14, 42,929.25 and 16,961.04 is: 23,406.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.14 : 42,929.25 = 16,961.04 : x
  2. Step 2: Convert to fraction form
    31,108.14/42,929.25 = 16,961.04/x
  3. Step 3: Cross multiply
    31,108.14x = 42,929.25 × 16,961.04
  4. Step 4: Simplify right side
    31,108.14x = 728,124,726.42
  5. Step 5: Solve for x
    x = 728,124,726.42/31,108.14
  6. Step 6: Final answer
    x = 23,406.24

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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.