Home / 31,142.36-42,976.44-16,995.32

Finding the Fourth Proportional to 31,142.36, 42,976.44 and 16,995.32

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Solution

The fourth proportional to 31,142.36, 42,976.44 and 16,995.32 is: 23,453.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,142.36 : 42,976.44 = 16,995.32 : x
  2. Step 2: Convert to fraction form
    31,142.36/42,976.44 = 16,995.32/x
  3. Step 3: Cross multiply
    31,142.36x = 42,976.44 × 16,995.32
  4. Step 4: Simplify right side
    31,142.36x = 730,398,350.26
  5. Step 5: Solve for x
    x = 730,398,350.26/31,142.36
  6. Step 6: Final answer
    x = 23,453.53

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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.