Home / 31,320.06-43,221.36-17,172.87

Finding the Fourth Proportional to 31,320.06, 43,221.36 and 17,172.87

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Solution

The fourth proportional to 31,320.06, 43,221.36 and 17,172.87 is: 23,698.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,320.06 : 43,221.36 = 17,172.87 : x
  2. Step 2: Convert to fraction form
    31,320.06/43,221.36 = 17,172.87/x
  3. Step 3: Cross multiply
    31,320.06x = 43,221.36 × 17,172.87
  4. Step 4: Simplify right side
    31,320.06x = 742,234,796.50
  5. Step 5: Solve for x
    x = 742,234,796.50/31,320.06
  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.