Home / 21,623.32-29,836.62-12,191.68

Finding the Fourth Proportional to 21,623.32, 29,836.62 and 12,191.68

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Solution

The fourth proportional to 21,623.32, 29,836.62 and 12,191.68 is: 16,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.32 : 29,836.62 = 12,191.68 : x
  2. Step 2: Convert to fraction form
    21,623.32/29,836.62 = 12,191.68/x
  3. Step 3: Cross multiply
    21,623.32x = 29,836.62 × 12,191.68
  4. Step 4: Simplify right side
    21,623.32x = 363,758,523.32
  5. Step 5: Solve for x
    x = 363,758,523.32/21,623.32
  6. Step 6: Final answer
    x = 16,822.51

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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.