Home / 21,073.58-29,082.38-12,121.07

Finding the Fourth Proportional to 21,073.58, 29,082.38 and 12,121.07

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Solution

The fourth proportional to 21,073.58, 29,082.38 and 12,121.07 is: 16,727.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.58 : 29,082.38 = 12,121.07 : x
  2. Step 2: Convert to fraction form
    21,073.58/29,082.38 = 12,121.07/x
  3. Step 3: Cross multiply
    21,073.58x = 29,082.38 × 12,121.07
  4. Step 4: Simplify right side
    21,073.58x = 352,509,563.75
  5. Step 5: Solve for x
    x = 352,509,563.75/21,073.58
  6. Step 6: Final answer
    x = 16,727.56

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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.