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Finding the Fourth Proportional to 13,627.20, 18,800.67 and 8,914.20

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Solution

The fourth proportional to 13,627.20, 18,800.67 and 8,914.20 is: 12,298.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.20 : 18,800.67 = 8,914.20 : x
  2. Step 2: Convert to fraction form
    13,627.20/18,800.67 = 8,914.20/x
  3. Step 3: Cross multiply
    13,627.20x = 18,800.67 × 8,914.20
  4. Step 4: Simplify right side
    13,627.20x = 167,592,932.51
  5. Step 5: Solve for x
    x = 167,592,932.51/13,627.20
  6. Step 6: Final answer
    x = 12,298.41

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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.