Home / 31,611.44-43,616.40-18,865.28

Finding the Fourth Proportional to 31,611.44, 43,616.40 and 18,865.28

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Solution

The fourth proportional to 31,611.44, 43,616.40 and 18,865.28 is: 26,029.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,611.44 : 43,616.40 = 18,865.28 : x
  2. Step 2: Convert to fraction form
    31,611.44/43,616.40 = 18,865.28/x
  3. Step 3: Cross multiply
    31,611.44x = 43,616.40 × 18,865.28
  4. Step 4: Simplify right side
    31,611.44x = 822,835,598.59
  5. Step 5: Solve for x
    x = 822,835,598.59/31,611.44
  6. Step 6: Final answer
    x = 26,029.68

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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.