Home / 21,192.48-31,787.31-8,709.27

Finding the Fourth Proportional to 21,192.48, 31,787.31 and 8,709.27

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Solution

The fourth proportional to 21,192.48, 31,787.31 and 8,709.27 is: 13,063.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.48 : 31,787.31 = 8,709.27 : x
  2. Step 2: Convert to fraction form
    21,192.48/31,787.31 = 8,709.27/x
  3. Step 3: Cross multiply
    21,192.48x = 31,787.31 × 8,709.27
  4. Step 4: Simplify right side
    21,192.48x = 276,844,265.36
  5. Step 5: Solve for x
    x = 276,844,265.36/21,192.48
  6. Step 6: Final answer
    x = 13,063.33

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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.