Home / 31,789.28-43,866.30-18,866.32

Finding the Fourth Proportional to 31,789.28, 43,866.30 and 18,866.32

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Solution

The fourth proportional to 31,789.28, 43,866.30 and 18,866.32 is: 26,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.28 : 43,866.30 = 18,866.32 : x
  2. Step 2: Convert to fraction form
    31,789.28/43,866.30 = 18,866.32/x
  3. Step 3: Cross multiply
    31,789.28x = 43,866.30 × 18,866.32
  4. Step 4: Simplify right side
    31,789.28x = 827,595,653.02
  5. Step 5: Solve for x
    x = 827,595,653.02/31,789.28
  6. Step 6: Final answer
    x = 26,033.80

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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.