Home / 31,786.98-43,868.08-18,358.80

Finding the Fourth Proportional to 31,786.98, 43,868.08 and 18,358.80

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Solution

The fourth proportional to 31,786.98, 43,868.08 and 18,358.80 is: 25,336.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.98 : 43,868.08 = 18,358.80 : x
  2. Step 2: Convert to fraction form
    31,786.98/43,868.08 = 18,358.80/x
  3. Step 3: Cross multiply
    31,786.98x = 43,868.08 × 18,358.80
  4. Step 4: Simplify right side
    31,786.98x = 805,365,307.10
  5. Step 5: Solve for x
    x = 805,365,307.10/31,786.98
  6. Step 6: Final answer
    x = 25,336.33

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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.