Home / 11,325.81-16,991.15-4,748.21

Finding the Fourth Proportional to 11,325.81, 16,991.15 and 4,748.21

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Solution

The fourth proportional to 11,325.81, 16,991.15 and 4,748.21 is: 7,123.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.81 : 16,991.15 = 4,748.21 : x
  2. Step 2: Convert to fraction form
    11,325.81/16,991.15 = 4,748.21/x
  3. Step 3: Cross multiply
    11,325.81x = 16,991.15 × 4,748.21
  4. Step 4: Simplify right side
    11,325.81x = 80,677,439.64
  5. Step 5: Solve for x
    x = 80,677,439.64/11,325.81
  6. Step 6: Final answer
    x = 7,123.33

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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.