Home / 31,319.82-43,221.33-17,172.90

Finding the Fourth Proportional to 31,319.82, 43,221.33 and 17,172.90

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Solution

The fourth proportional to 31,319.82, 43,221.33 and 17,172.90 is: 23,698.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,319.82 : 43,221.33 = 17,172.90 : x
  2. Step 2: Convert to fraction form
    31,319.82/43,221.33 = 17,172.90/x
  3. Step 3: Cross multiply
    31,319.82x = 43,221.33 × 17,172.90
  4. Step 4: Simplify right side
    31,319.82x = 742,235,577.96
  5. Step 5: Solve for x
    x = 742,235,577.96/31,319.82
  6. Step 6: Final answer
    x = 23,698.59

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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.