Home / 31,779.21-43,856.12-17,439.65

Finding the Fourth Proportional to 31,779.21, 43,856.12 and 17,439.65

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Solution

The fourth proportional to 31,779.21, 43,856.12 and 17,439.65 is: 24,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.21 : 43,856.12 = 17,439.65 : x
  2. Step 2: Convert to fraction form
    31,779.21/43,856.12 = 17,439.65/x
  3. Step 3: Cross multiply
    31,779.21x = 43,856.12 × 17,439.65
  4. Step 4: Simplify right side
    31,779.21x = 764,835,383.16
  5. Step 5: Solve for x
    x = 764,835,383.16/31,779.21
  6. Step 6: Final answer
    x = 24,067.16

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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.