Home / 30,638.39-45,961.49-10,918.94

Finding the Fourth Proportional to 30,638.39, 45,961.49 and 10,918.94

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Solution

The fourth proportional to 30,638.39, 45,961.49 and 10,918.94 is: 16,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,638.39 : 45,961.49 = 10,918.94 : x
  2. Step 2: Convert to fraction form
    30,638.39/45,961.49 = 10,918.94/x
  3. Step 3: Cross multiply
    30,638.39x = 45,961.49 × 10,918.94
  4. Step 4: Simplify right side
    30,638.39x = 501,850,549.11
  5. Step 5: Solve for x
    x = 501,850,549.11/30,638.39
  6. Step 6: Final answer
    x = 16,379.80

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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.