Home / 13,632.50-18,814.28-8,330.85

Finding the Fourth Proportional to 13,632.50, 18,814.28 and 8,330.85

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Solution

The fourth proportional to 13,632.50, 18,814.28 and 8,330.85 is: 11,497.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.50 : 18,814.28 = 8,330.85 : x
  2. Step 2: Convert to fraction form
    13,632.50/18,814.28 = 8,330.85/x
  3. Step 3: Cross multiply
    13,632.50x = 18,814.28 × 8,330.85
  4. Step 4: Simplify right side
    13,632.50x = 156,738,902.88
  5. Step 5: Solve for x
    x = 156,738,902.88/13,632.50
  6. Step 6: Final answer
    x = 11,497.44

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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.