Home / 11,325.15-16,990.09-3,428.24

Finding the Fourth Proportional to 11,325.15, 16,990.09 and 3,428.24

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Solution

The fourth proportional to 11,325.15, 16,990.09 and 3,428.24 is: 5,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.15 : 16,990.09 = 3,428.24 : x
  2. Step 2: Convert to fraction form
    11,325.15/16,990.09 = 3,428.24/x
  3. Step 3: Cross multiply
    11,325.15x = 16,990.09 × 3,428.24
  4. Step 4: Simplify right side
    11,325.15x = 58,246,012.62
  5. Step 5: Solve for x
    x = 58,246,012.62/11,325.15
  6. Step 6: Final answer
    x = 5,143.07

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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.