Home / 11,125.10-16,724.10-7,860.80

Finding the Fourth Proportional to 11,125.10, 16,724.10 and 7,860.80

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Solution

The fourth proportional to 11,125.10, 16,724.10 and 7,860.80 is: 11,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.10 : 16,724.10 = 7,860.80 : x
  2. Step 2: Convert to fraction form
    11,125.10/16,724.10 = 7,860.80/x
  3. Step 3: Cross multiply
    11,125.10x = 16,724.10 × 7,860.80
  4. Step 4: Simplify right side
    11,125.10x = 131,464,805.28
  5. Step 5: Solve for x
    x = 131,464,805.28/11,125.10
  6. Step 6: Final answer
    x = 11,816.95

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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.