Home / 21,204.72-31,787.64-7,344

Finding the Fourth Proportional to 21,204.72, 31,787.64 and 7,344

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Solution

The fourth proportional to 21,204.72, 31,787.64 and 7,344 is: 11,009.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.72 : 31,787.64 = 7,344 : x
  2. Step 2: Convert to fraction form
    21,204.72/31,787.64 = 7,344/x
  3. Step 3: Cross multiply
    21,204.72x = 31,787.64 × 7,344
  4. Step 4: Simplify right side
    21,204.72x = 233,448,428.16
  5. Step 5: Solve for x
    x = 233,448,428.16/21,204.72
  6. Step 6: Final answer
    x = 11,009.27

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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.