Home / 13,285.14-19,930.45-11,109.07

Finding the Fourth Proportional to 13,285.14, 19,930.45 and 11,109.07

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Solution

The fourth proportional to 13,285.14, 19,930.45 and 11,109.07 is: 16,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.14 : 19,930.45 = 11,109.07 : x
  2. Step 2: Convert to fraction form
    13,285.14/19,930.45 = 11,109.07/x
  3. Step 3: Cross multiply
    13,285.14x = 19,930.45 × 11,109.07
  4. Step 4: Simplify right side
    13,285.14x = 221,408,764.18
  5. Step 5: Solve for x
    x = 221,408,764.18/13,285.14
  6. Step 6: Final answer
    x = 16,665.90

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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.