Home / 21,682.20-29,916.60-12,606.14

Finding the Fourth Proportional to 21,682.20, 29,916.60 and 12,606.14

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Solution

The fourth proportional to 21,682.20, 29,916.60 and 12,606.14 is: 17,393.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,682.20 : 29,916.60 = 12,606.14 : x
  2. Step 2: Convert to fraction form
    21,682.20/29,916.60 = 12,606.14/x
  3. Step 3: Cross multiply
    21,682.20x = 29,916.60 × 12,606.14
  4. Step 4: Simplify right side
    21,682.20x = 377,132,847.92
  5. Step 5: Solve for x
    x = 377,132,847.92/21,682.20
  6. Step 6: Final answer
    x = 17,393.66

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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.