Home / 11,927.20-17,890.80-8,816.80

Finding the Fourth Proportional to 11,927.20, 17,890.80 and 8,816.80

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Solution

The fourth proportional to 11,927.20, 17,890.80 and 8,816.80 is: 13,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,927.20 : 17,890.80 = 8,816.80 : x
  2. Step 2: Convert to fraction form
    11,927.20/17,890.80 = 8,816.80/x
  3. Step 3: Cross multiply
    11,927.20x = 17,890.80 × 8,816.80
  4. Step 4: Simplify right side
    11,927.20x = 157,739,605.44
  5. Step 5: Solve for x
    x = 157,739,605.44/11,927.20
  6. Step 6: Final answer
    x = 13,225.20

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1.5x scale

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.