Home / 31,690.59-43,743.96-18,267.21

Finding the Fourth Proportional to 31,690.59, 43,743.96 and 18,267.21

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Solution

The fourth proportional to 31,690.59, 43,743.96 and 18,267.21 is: 25,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,690.59 : 43,743.96 = 18,267.21 : x
  2. Step 2: Convert to fraction form
    31,690.59/43,743.96 = 18,267.21/x
  3. Step 3: Cross multiply
    31,690.59x = 43,743.96 × 18,267.21
  4. Step 4: Simplify right side
    31,690.59x = 799,080,103.55
  5. Step 5: Solve for x
    x = 799,080,103.55/31,690.59
  6. Step 6: Final answer
    x = 25,215.06

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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.