Home / 21,162.51-31,744.22-7,122.96

Finding the Fourth Proportional to 21,162.51, 31,744.22 and 7,122.96

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Solution

The fourth proportional to 21,162.51, 31,744.22 and 7,122.96 is: 10,684.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,162.51 : 31,744.22 = 7,122.96 : x
  2. Step 2: Convert to fraction form
    21,162.51/31,744.22 = 7,122.96/x
  3. Step 3: Cross multiply
    21,162.51x = 31,744.22 × 7,122.96
  4. Step 4: Simplify right side
    21,162.51x = 226,112,773.68
  5. Step 5: Solve for x
    x = 226,112,773.68/21,162.51
  6. Step 6: Final answer
    x = 10,684.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.