Home / 31,786.56-43,865.28-18,357.60

Finding the Fourth Proportional to 31,786.56, 43,865.28 and 18,357.60

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Solution

The fourth proportional to 31,786.56, 43,865.28 and 18,357.60 is: 25,333.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.56 : 43,865.28 = 18,357.60 : x
  2. Step 2: Convert to fraction form
    31,786.56/43,865.28 = 18,357.60/x
  3. Step 3: Cross multiply
    31,786.56x = 43,865.28 × 18,357.60
  4. Step 4: Simplify right side
    31,786.56x = 805,261,264.13
  5. Step 5: Solve for x
    x = 805,261,264.13/31,786.56
  6. Step 6: Final answer
    x = 25,333.39

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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.