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Finding the Fourth Proportional to 13,200.57, 18,236.57 and 8,674.02

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Solution

The fourth proportional to 13,200.57, 18,236.57 and 8,674.02 is: 11,983.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.57 : 18,236.57 = 8,674.02 : x
  2. Step 2: Convert to fraction form
    13,200.57/18,236.57 = 8,674.02/x
  3. Step 3: Cross multiply
    13,200.57x = 18,236.57 × 8,674.02
  4. Step 4: Simplify right side
    13,200.57x = 158,184,372.91
  5. Step 5: Solve for x
    x = 158,184,372.91/13,200.57
  6. Step 6: Final answer
    x = 11,983.15

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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.