Home / 31,316.72-43,217.52-18,739.04

Finding the Fourth Proportional to 31,316.72, 43,217.52 and 18,739.04

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Solution

The fourth proportional to 31,316.72, 43,217.52 and 18,739.04 is: 25,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,316.72 : 43,217.52 = 18,739.04 : x
  2. Step 2: Convert to fraction form
    31,316.72/43,217.52 = 18,739.04/x
  3. Step 3: Cross multiply
    31,316.72x = 43,217.52 × 18,739.04
  4. Step 4: Simplify right side
    31,316.72x = 809,854,835.98
  5. Step 5: Solve for x
    x = 809,854,835.98/31,316.72
  6. Step 6: Final answer
    x = 25,860.14

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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.