Home / 16,836.18-25,231.77-12,921.36

Finding the Fourth Proportional to 16,836.18, 25,231.77 and 12,921.36

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Solution

The fourth proportional to 16,836.18, 25,231.77 and 12,921.36 is: 19,364.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,836.18 : 25,231.77 = 12,921.36 : x
  2. Step 2: Convert to fraction form
    16,836.18/25,231.77 = 12,921.36/x
  3. Step 3: Cross multiply
    16,836.18x = 25,231.77 × 12,921.36
  4. Step 4: Simplify right side
    16,836.18x = 326,028,783.61
  5. Step 5: Solve for x
    x = 326,028,783.61/16,836.18
  6. Step 6: Final answer
    x = 19,364.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.