Home / 21,362.64-29,481.03-11,931.81

Finding the Fourth Proportional to 21,362.64, 29,481.03 and 11,931.81

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Solution

The fourth proportional to 21,362.64, 29,481.03 and 11,931.81 is: 16,466.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,362.64 : 29,481.03 = 11,931.81 : x
  2. Step 2: Convert to fraction form
    21,362.64/29,481.03 = 11,931.81/x
  3. Step 3: Cross multiply
    21,362.64x = 29,481.03 × 11,931.81
  4. Step 4: Simplify right side
    21,362.64x = 351,762,048.56
  5. Step 5: Solve for x
    x = 351,762,048.56/21,362.64
  6. Step 6: Final answer
    x = 16,466.23

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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.