Home / 13,667.60-18,724.66-13,155.66

Finding the Fourth Proportional to 13,667.60, 18,724.66 and 13,155.66

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Solution

The fourth proportional to 13,667.60, 18,724.66 and 13,155.66 is: 18,023.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.60 : 18,724.66 = 13,155.66 : x
  2. Step 2: Convert to fraction form
    13,667.60/18,724.66 = 13,155.66/x
  3. Step 3: Cross multiply
    13,667.60x = 18,724.66 × 13,155.66
  4. Step 4: Simplify right side
    13,667.60x = 246,335,260.58
  5. Step 5: Solve for x
    x = 246,335,260.58/13,667.60
  6. Step 6: Final answer
    x = 18,023.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.