Home / 21,197.70-29,242.62-12,697.56

Finding the Fourth Proportional to 21,197.70, 29,242.62 and 12,697.56

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Solution

The fourth proportional to 21,197.70, 29,242.62 and 12,697.56 is: 17,516.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.70 : 29,242.62 = 12,697.56 : x
  2. Step 2: Convert to fraction form
    21,197.70/29,242.62 = 12,697.56/x
  3. Step 3: Cross multiply
    21,197.70x = 29,242.62 × 12,697.56
  4. Step 4: Simplify right side
    21,197.70x = 371,309,922.01
  5. Step 5: Solve for x
    x = 371,309,922.01/21,197.70
  6. Step 6: Final answer
    x = 17,516.52

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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.