Home / 16,661.40-24,999.30-7,891.80

Finding the Fourth Proportional to 16,661.40, 24,999.30 and 7,891.80

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Solution

The fourth proportional to 16,661.40, 24,999.30 and 7,891.80 is: 11,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,661.40 : 24,999.30 = 7,891.80 : x
  2. Step 2: Convert to fraction form
    16,661.40/24,999.30 = 7,891.80/x
  3. Step 3: Cross multiply
    16,661.40x = 24,999.30 × 7,891.80
  4. Step 4: Simplify right side
    16,661.40x = 197,289,475.74
  5. Step 5: Solve for x
    x = 197,289,475.74/16,661.40
  6. Step 6: Final answer
    x = 11,841.11

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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.