Home / 30,638.14-45,961.12-10,918.69

Finding the Fourth Proportional to 30,638.14, 45,961.12 and 10,918.69

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Solution

The fourth proportional to 30,638.14, 45,961.12 and 10,918.69 is: 16,379.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.14 : 45,961.12 = 10,918.69 : x
  2. Step 2: Convert to fraction form
    30,638.14/45,961.12 = 10,918.69/x
  3. Step 3: Cross multiply
    30,638.14x = 45,961.12 × 10,918.69
  4. Step 4: Simplify right side
    30,638.14x = 501,834,991.53
  5. Step 5: Solve for x
    x = 501,834,991.53/30,638.14
  6. Step 6: Final answer
    x = 16,379.42

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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.