Home / 13,179.60-18,188.28-7,211.64

Finding the Fourth Proportional to 13,179.60, 18,188.28 and 7,211.64

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Solution

The fourth proportional to 13,179.60, 18,188.28 and 7,211.64 is: 9,952.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.60 : 18,188.28 = 7,211.64 : x
  2. Step 2: Convert to fraction form
    13,179.60/18,188.28 = 7,211.64/x
  3. Step 3: Cross multiply
    13,179.60x = 18,188.28 × 7,211.64
  4. Step 4: Simplify right side
    13,179.60x = 131,167,327.58
  5. Step 5: Solve for x
    x = 131,167,327.58/13,179.60
  6. Step 6: Final answer
    x = 9,952.30

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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.