Home / 11,013.80-16,499.10-6,618.20

Finding the Fourth Proportional to 11,013.80, 16,499.10 and 6,618.20

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Solution

The fourth proportional to 11,013.80, 16,499.10 and 6,618.20 is: 9,914.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,013.80 : 16,499.10 = 6,618.20 : x
  2. Step 2: Convert to fraction form
    11,013.80/16,499.10 = 6,618.20/x
  3. Step 3: Cross multiply
    11,013.80x = 16,499.10 × 6,618.20
  4. Step 4: Simplify right side
    11,013.80x = 109,194,343.62
  5. Step 5: Solve for x
    x = 109,194,343.62/11,013.80
  6. Step 6: Final answer
    x = 9,914.32

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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.