Home / 10,890.48-16,338.90-3,494.78

Finding the Fourth Proportional to 10,890.48, 16,338.90 and 3,494.78

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Solution

The fourth proportional to 10,890.48, 16,338.90 and 3,494.78 is: 5,243.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.48 : 16,338.90 = 3,494.78 : x
  2. Step 2: Convert to fraction form
    10,890.48/16,338.90 = 3,494.78/x
  3. Step 3: Cross multiply
    10,890.48x = 16,338.90 × 3,494.78
  4. Step 4: Simplify right side
    10,890.48x = 57,100,779.25
  5. Step 5: Solve for x
    x = 57,100,779.25/10,890.48
  6. Step 6: Final answer
    x = 5,243.18

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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.