Home / 21,618.42-29,833.20-12,190.02

Finding the Fourth Proportional to 21,618.42, 29,833.20 and 12,190.02

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Solution

The fourth proportional to 21,618.42, 29,833.20 and 12,190.02 is: 16,822.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.42 : 29,833.20 = 12,190.02 : x
  2. Step 2: Convert to fraction form
    21,618.42/29,833.20 = 12,190.02/x
  3. Step 3: Cross multiply
    21,618.42x = 29,833.20 × 12,190.02
  4. Step 4: Simplify right side
    21,618.42x = 363,667,304.66
  5. Step 5: Solve for x
    x = 363,667,304.66/21,618.42
  6. Step 6: Final answer
    x = 16,822.10

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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.