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Finding the Fourth Proportional to 13,707.08, 18,895.97 and 8,983.16

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Solution

The fourth proportional to 13,707.08, 18,895.97 and 8,983.16 is: 12,383.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.08 : 18,895.97 = 8,983.16 : x
  2. Step 2: Convert to fraction form
    13,707.08/18,895.97 = 8,983.16/x
  3. Step 3: Cross multiply
    13,707.08x = 18,895.97 × 8,983.16
  4. Step 4: Simplify right side
    13,707.08x = 169,745,521.87
  5. Step 5: Solve for x
    x = 169,745,521.87/13,707.08
  6. Step 6: Final answer
    x = 12,383.78

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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.