Home / 21,611.90-29,794.83-13,650.14

Finding the Fourth Proportional to 21,611.90, 29,794.83 and 13,650.14

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Solution

The fourth proportional to 21,611.90, 29,794.83 and 13,650.14 is: 18,818.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.90 : 29,794.83 = 13,650.14 : x
  2. Step 2: Convert to fraction form
    21,611.90/29,794.83 = 13,650.14/x
  3. Step 3: Cross multiply
    21,611.90x = 29,794.83 × 13,650.14
  4. Step 4: Simplify right side
    21,611.90x = 406,703,600.78
  5. Step 5: Solve for x
    x = 406,703,600.78/21,611.90
  6. Step 6: Final answer
    x = 18,818.50

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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.