Home / 31,145.96-42,981.44-16,998.82

Finding the Fourth Proportional to 31,145.96, 42,981.44 and 16,998.82

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Solution

The fourth proportional to 31,145.96, 42,981.44 and 16,998.82 is: 23,458.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,145.96 : 42,981.44 = 16,998.82 : x
  2. Step 2: Convert to fraction form
    31,145.96/42,981.44 = 16,998.82/x
  3. Step 3: Cross multiply
    31,145.96x = 42,981.44 × 16,998.82
  4. Step 4: Simplify right side
    31,145.96x = 730,633,761.90
  5. Step 5: Solve for x
    x = 730,633,761.90/31,145.96
  6. Step 6: Final answer
    x = 23,458.38

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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.