Home / 21,153.96-29,193.41-11,721.92

Finding the Fourth Proportional to 21,153.96, 29,193.41 and 11,721.92

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Solution

The fourth proportional to 21,153.96, 29,193.41 and 11,721.92 is: 16,176.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.96 : 29,193.41 = 11,721.92 : x
  2. Step 2: Convert to fraction form
    21,153.96/29,193.41 = 11,721.92/x
  3. Step 3: Cross multiply
    21,153.96x = 29,193.41 × 11,721.92
  4. Step 4: Simplify right side
    21,153.96x = 342,202,699.88
  5. Step 5: Solve for x
    x = 342,202,699.88/21,153.96
  6. Step 6: Final answer
    x = 16,176.77

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1.5x scale

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.