Home / 31,145.58-42,982.65-16,998.66

Finding the Fourth Proportional to 31,145.58, 42,982.65 and 16,998.66

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Solution

The fourth proportional to 31,145.58, 42,982.65 and 16,998.66 is: 23,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,145.58 : 42,982.65 = 16,998.66 : x
  2. Step 2: Convert to fraction form
    31,145.58/42,982.65 = 16,998.66/x
  3. Step 3: Cross multiply
    31,145.58x = 42,982.65 × 16,998.66
  4. Step 4: Simplify right side
    31,145.58x = 730,647,453.25
  5. Step 5: Solve for x
    x = 730,647,453.25/31,145.58
  6. Step 6: Final answer
    x = 23,459.11

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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.