Home / 11,127.20-16,690.80-9,456.80

Finding the Fourth Proportional to 11,127.20, 16,690.80 and 9,456.80

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Solution

The fourth proportional to 11,127.20, 16,690.80 and 9,456.80 is: 14,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,127.20 : 16,690.80 = 9,456.80 : x
  2. Step 2: Convert to fraction form
    11,127.20/16,690.80 = 9,456.80/x
  3. Step 3: Cross multiply
    11,127.20x = 16,690.80 × 9,456.80
  4. Step 4: Simplify right side
    11,127.20x = 157,841,557.44
  5. Step 5: Solve for x
    x = 157,841,557.44/11,127.20
  6. Step 6: Final answer
    x = 14,185.20

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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.