Home / 31,057.20-42,858.90-16,910.06

Finding the Fourth Proportional to 31,057.20, 42,858.90 and 16,910.06

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Solution

The fourth proportional to 31,057.20, 42,858.90 and 16,910.06 is: 23,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,057.20 : 42,858.90 = 16,910.06 : x
  2. Step 2: Convert to fraction form
    31,057.20/42,858.90 = 16,910.06/x
  3. Step 3: Cross multiply
    31,057.20x = 42,858.90 × 16,910.06
  4. Step 4: Simplify right side
    31,057.20x = 724,746,356.24
  5. Step 5: Solve for x
    x = 724,746,356.24/31,057.20
  6. Step 6: Final answer
    x = 23,335.86

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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.