Home / 21,682.46-29,922.36-12,122.08

Finding the Fourth Proportional to 21,682.46, 29,922.36 and 12,122.08

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Solution

The fourth proportional to 21,682.46, 29,922.36 and 12,122.08 is: 16,728.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,682.46 : 29,922.36 = 12,122.08 : x
  2. Step 2: Convert to fraction form
    21,682.46/29,922.36 = 12,122.08/x
  3. Step 3: Cross multiply
    21,682.46x = 29,922.36 × 12,122.08
  4. Step 4: Simplify right side
    21,682.46x = 362,721,241.71
  5. Step 5: Solve for x
    x = 362,721,241.71/21,682.46
  6. Step 6: Final answer
    x = 16,728.79

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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.