Home / 13,211.60-18,201.36-9,226.40

Finding the Fourth Proportional to 13,211.60, 18,201.36 and 9,226.40

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Solution

The fourth proportional to 13,211.60, 18,201.36 and 9,226.40 is: 12,711.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.60 : 18,201.36 = 9,226.40 : x
  2. Step 2: Convert to fraction form
    13,211.60/18,201.36 = 9,226.40/x
  3. Step 3: Cross multiply
    13,211.60x = 18,201.36 × 9,226.40
  4. Step 4: Simplify right side
    13,211.60x = 167,933,027.90
  5. Step 5: Solve for x
    x = 167,933,027.90/13,211.60
  6. Step 6: Final answer
    x = 12,711.03

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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.