Home / 13,268.61-18,306.12-8,231.01

Finding the Fourth Proportional to 13,268.61, 18,306.12 and 8,231.01

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Solution

The fourth proportional to 13,268.61, 18,306.12 and 8,231.01 is: 11,355.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.61 : 18,306.12 = 8,231.01 : x
  2. Step 2: Convert to fraction form
    13,268.61/18,306.12 = 8,231.01/x
  3. Step 3: Cross multiply
    13,268.61x = 18,306.12 × 8,231.01
  4. Step 4: Simplify right side
    13,268.61x = 150,677,856.78
  5. Step 5: Solve for x
    x = 150,677,856.78/13,268.61
  6. Step 6: Final answer
    x = 11,355.96

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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.