Home / 21,660.18-29,893.15-13,160.44

Finding the Fourth Proportional to 21,660.18, 29,893.15 and 13,160.44

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Solution

The fourth proportional to 21,660.18, 29,893.15 and 13,160.44 is: 18,162.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.18 : 29,893.15 = 13,160.44 : x
  2. Step 2: Convert to fraction form
    21,660.18/29,893.15 = 13,160.44/x
  3. Step 3: Cross multiply
    21,660.18x = 29,893.15 × 13,160.44
  4. Step 4: Simplify right side
    21,660.18x = 393,407,006.99
  5. Step 5: Solve for x
    x = 393,407,006.99/21,660.18
  6. Step 6: Final answer
    x = 18,162.68

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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.