Home / 11,682.50-16,121.87-7,490.75

Finding the Fourth Proportional to 11,682.50, 16,121.87 and 7,490.75

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Solution

The fourth proportional to 11,682.50, 16,121.87 and 7,490.75 is: 10,337.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,682.50 : 16,121.87 = 7,490.75 : x
  2. Step 2: Convert to fraction form
    11,682.50/16,121.87 = 7,490.75/x
  3. Step 3: Cross multiply
    11,682.50x = 16,121.87 × 7,490.75
  4. Step 4: Simplify right side
    11,682.50x = 120,764,897.70
  5. Step 5: Solve for x
    x = 120,764,897.70/11,682.50
  6. Step 6: Final answer
    x = 10,337.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.