Home / 13,749.44-18,964.42-12,618.75

Finding the Fourth Proportional to 13,749.44, 18,964.42 and 12,618.75

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Solution

The fourth proportional to 13,749.44, 18,964.42 and 12,618.75 is: 17,404.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.44 : 18,964.42 = 12,618.75 : x
  2. Step 2: Convert to fraction form
    13,749.44/18,964.42 = 12,618.75/x
  3. Step 3: Cross multiply
    13,749.44x = 18,964.42 × 12,618.75
  4. Step 4: Simplify right side
    13,749.44x = 239,307,332.09
  5. Step 5: Solve for x
    x = 239,307,332.09/13,749.44
  6. Step 6: Final answer
    x = 17,404.88

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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.