Home / 13,788.72-19,022.13-8,481.60

Finding the Fourth Proportional to 13,788.72, 19,022.13 and 8,481.60

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Solution

The fourth proportional to 13,788.72, 19,022.13 and 8,481.60 is: 11,700.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.72 : 19,022.13 = 8,481.60 : x
  2. Step 2: Convert to fraction form
    13,788.72/19,022.13 = 8,481.60/x
  3. Step 3: Cross multiply
    13,788.72x = 19,022.13 × 8,481.60
  4. Step 4: Simplify right side
    13,788.72x = 161,338,097.81
  5. Step 5: Solve for x
    x = 161,338,097.81/13,788.72
  6. Step 6: Final answer
    x = 11,700.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.