Home / 21,092.26-29,110.24-12,139.60

Finding the Fourth Proportional to 21,092.26, 29,110.24 and 12,139.60

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Solution

The fourth proportional to 21,092.26, 29,110.24 and 12,139.60 is: 16,754.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.26 : 29,110.24 = 12,139.60 : x
  2. Step 2: Convert to fraction form
    21,092.26/29,110.24 = 12,139.60/x
  3. Step 3: Cross multiply
    21,092.26x = 29,110.24 × 12,139.60
  4. Step 4: Simplify right side
    21,092.26x = 353,386,669.50
  5. Step 5: Solve for x
    x = 353,386,669.50/21,092.26
  6. Step 6: Final answer
    x = 16,754.33

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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.