Home / 13,743.11-18,965.48-7,455.48

Finding the Fourth Proportional to 13,743.11, 18,965.48 and 7,455.48

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Solution

The fourth proportional to 13,743.11, 18,965.48 and 7,455.48 is: 10,288.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.11 : 18,965.48 = 7,455.48 : x
  2. Step 2: Convert to fraction form
    13,743.11/18,965.48 = 7,455.48/x
  3. Step 3: Cross multiply
    13,743.11x = 18,965.48 × 7,455.48
  4. Step 4: Simplify right side
    13,743.11x = 141,396,719.55
  5. Step 5: Solve for x
    x = 141,396,719.55/13,743.11
  6. Step 6: Final answer
    x = 10,288.56

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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.