Home / 13,285.26-19,930.64-11,109.20

Finding the Fourth Proportional to 13,285.26, 19,930.64 and 11,109.20

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Solution

The fourth proportional to 13,285.26, 19,930.64 and 11,109.20 is: 16,666.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.26 : 19,930.64 = 11,109.20 : x
  2. Step 2: Convert to fraction form
    13,285.26/19,930.64 = 11,109.20/x
  3. Step 3: Cross multiply
    13,285.26x = 19,930.64 × 11,109.20
  4. Step 4: Simplify right side
    13,285.26x = 221,413,310.69
  5. Step 5: Solve for x
    x = 221,413,310.69/13,285.26
  6. Step 6: Final answer
    x = 16,666.09

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1.5x scale

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.