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Finding the Fourth Proportional to 18,213.69, 27,313.95 and 6,364.14

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Solution

The fourth proportional to 18,213.69, 27,313.95 and 6,364.14 is: 9,543.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.69 : 27,313.95 = 6,364.14 : x
  2. Step 2: Convert to fraction form
    18,213.69/27,313.95 = 6,364.14/x
  3. Step 3: Cross multiply
    18,213.69x = 27,313.95 × 6,364.14
  4. Step 4: Simplify right side
    18,213.69x = 173,829,801.75
  5. Step 5: Solve for x
    x = 173,829,801.75/18,213.69
  6. Step 6: Final answer
    x = 9,543.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.