Home / 21,431.42-29,575.83-12,232.79

Finding the Fourth Proportional to 21,431.42, 29,575.83 and 12,232.79

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Solution

The fourth proportional to 21,431.42, 29,575.83 and 12,232.79 is: 16,881.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.42 : 29,575.83 = 12,232.79 : x
  2. Step 2: Convert to fraction form
    21,431.42/29,575.83 = 12,232.79/x
  3. Step 3: Cross multiply
    21,431.42x = 29,575.83 × 12,232.79
  4. Step 4: Simplify right side
    21,431.42x = 361,794,769.59
  5. Step 5: Solve for x
    x = 361,794,769.59/21,431.42
  6. Step 6: Final answer
    x = 16,881.52

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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.