Home / 31,057.13-42,858.80-16,909.97

Finding the Fourth Proportional to 31,057.13, 42,858.80 and 16,909.97

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Solution

The fourth proportional to 31,057.13, 42,858.80 and 16,909.97 is: 23,335.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,057.13 : 42,858.80 = 16,909.97 : x
  2. Step 2: Convert to fraction form
    31,057.13/42,858.80 = 16,909.97/x
  3. Step 3: Cross multiply
    31,057.13x = 42,858.80 × 16,909.97
  4. Step 4: Simplify right side
    31,057.13x = 724,741,022.24
  5. Step 5: Solve for x
    x = 724,741,022.24/31,057.13
  6. Step 6: Final answer
    x = 23,335.74

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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.