Home / 13,272.66-18,306.07-8,239.86

Finding the Fourth Proportional to 13,272.66, 18,306.07 and 8,239.86

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Solution

The fourth proportional to 13,272.66, 18,306.07 and 8,239.86 is: 11,364.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,272.66 : 18,306.07 = 8,239.86 : x
  2. Step 2: Convert to fraction form
    13,272.66/18,306.07 = 8,239.86/x
  3. Step 3: Cross multiply
    13,272.66x = 18,306.07 × 8,239.86
  4. Step 4: Simplify right side
    13,272.66x = 150,839,433.35
  5. Step 5: Solve for x
    x = 150,839,433.35/13,272.66
  6. Step 6: Final answer
    x = 11,364.67

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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.