Home / 13,171.60-18,160.68-11,305.36

Finding the Fourth Proportional to 13,171.60, 18,160.68 and 11,305.36

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Solution

The fourth proportional to 13,171.60, 18,160.68 and 11,305.36 is: 15,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.60 : 18,160.68 = 11,305.36 : x
  2. Step 2: Convert to fraction form
    13,171.60/18,160.68 = 11,305.36/x
  3. Step 3: Cross multiply
    13,171.60x = 18,160.68 × 11,305.36
  4. Step 4: Simplify right side
    13,171.60x = 205,313,025.24
  5. Step 5: Solve for x
    x = 205,313,025.24/13,171.60
  6. Step 6: Final answer
    x = 15,587.55

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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.