Home / 31,310.30-43,208.12-16,970.56

Finding the Fourth Proportional to 31,310.30, 43,208.12 and 16,970.56

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Solution

The fourth proportional to 31,310.30, 43,208.12 and 16,970.56 is: 23,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,310.30 : 43,208.12 = 16,970.56 : x
  2. Step 2: Convert to fraction form
    31,310.30/43,208.12 = 16,970.56/x
  3. Step 3: Cross multiply
    31,310.30x = 43,208.12 × 16,970.56
  4. Step 4: Simplify right side
    31,310.30x = 733,265,992.95
  5. Step 5: Solve for x
    x = 733,265,992.95/31,310.30
  6. Step 6: Final answer
    x = 23,419.32

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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.