Home / 21,082.20-29,092.65-12,131.09

Finding the Fourth Proportional to 21,082.20, 29,092.65 and 12,131.09

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Solution

The fourth proportional to 21,082.20, 29,092.65 and 12,131.09 is: 16,740.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.20 : 29,092.65 = 12,131.09 : x
  2. Step 2: Convert to fraction form
    21,082.20/29,092.65 = 12,131.09/x
  3. Step 3: Cross multiply
    21,082.20x = 29,092.65 × 12,131.09
  4. Step 4: Simplify right side
    21,082.20x = 352,925,410.03
  5. Step 5: Solve for x
    x = 352,925,410.03/21,082.20
  6. Step 6: Final answer
    x = 16,740.45

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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.