Home / 31,688.59-43,741.20-18,265.21

Finding the Fourth Proportional to 31,688.59, 43,741.20 and 18,265.21

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Solution

The fourth proportional to 31,688.59, 43,741.20 and 18,265.21 is: 25,212.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.59 : 43,741.20 = 18,265.21 : x
  2. Step 2: Convert to fraction form
    31,688.59/43,741.20 = 18,265.21/x
  3. Step 3: Cross multiply
    31,688.59x = 43,741.20 × 18,265.21
  4. Step 4: Simplify right side
    31,688.59x = 798,942,203.65
  5. Step 5: Solve for x
    x = 798,942,203.65/31,688.59
  6. Step 6: Final answer
    x = 25,212.30

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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.