Home / 21,324.44-31,989.36-7,287.14

Finding the Fourth Proportional to 21,324.44, 31,989.36 and 7,287.14

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Solution

The fourth proportional to 21,324.44, 31,989.36 and 7,287.14 is: 10,931.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.44 : 31,989.36 = 7,287.14 : x
  2. Step 2: Convert to fraction form
    21,324.44/31,989.36 = 7,287.14/x
  3. Step 3: Cross multiply
    21,324.44x = 31,989.36 × 7,287.14
  4. Step 4: Simplify right side
    21,324.44x = 233,110,944.83
  5. Step 5: Solve for x
    x = 233,110,944.83/21,324.44
  6. Step 6: Final answer
    x = 10,931.63

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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.