Home / 11,325.40-16,988.30-3,930.10

Finding the Fourth Proportional to 11,325.40, 16,988.30 and 3,930.10

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Solution

The fourth proportional to 11,325.40, 16,988.30 and 3,930.10 is: 5,895.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.40 : 16,988.30 = 3,930.10 : x
  2. Step 2: Convert to fraction form
    11,325.40/16,988.30 = 3,930.10/x
  3. Step 3: Cross multiply
    11,325.40x = 16,988.30 × 3,930.10
  4. Step 4: Simplify right side
    11,325.40x = 66,765,717.83
  5. Step 5: Solve for x
    x = 66,765,717.83/11,325.40
  6. Step 6: Final answer
    x = 5,895.22

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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.