Home / 31,319.76-43,221.69-17,172.57

Finding the Fourth Proportional to 31,319.76, 43,221.69 and 17,172.57

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Solution

The fourth proportional to 31,319.76, 43,221.69 and 17,172.57 is: 23,698.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,319.76 : 43,221.69 = 17,172.57 : x
  2. Step 2: Convert to fraction form
    31,319.76/43,221.69 = 17,172.57/x
  3. Step 3: Cross multiply
    31,319.76x = 43,221.69 × 17,172.57
  4. Step 4: Simplify right side
    31,319.76x = 742,227,497.04
  5. Step 5: Solve for x
    x = 742,227,497.04/31,319.76
  6. Step 6: Final answer
    x = 23,698.38

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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.