Home / 31,785.60-43,866.22-18,357.42

Finding the Fourth Proportional to 31,785.60, 43,866.22 and 18,357.42

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Solution

The fourth proportional to 31,785.60, 43,866.22 and 18,357.42 is: 25,334.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.60 : 43,866.22 = 18,357.42 : x
  2. Step 2: Convert to fraction form
    31,785.60/43,866.22 = 18,357.42/x
  3. Step 3: Cross multiply
    31,785.60x = 43,866.22 × 18,357.42
  4. Step 4: Simplify right side
    31,785.60x = 805,270,624.35
  5. Step 5: Solve for x
    x = 805,270,624.35/31,785.60
  6. Step 6: Final answer
    x = 25,334.45

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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.