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Finding the Fourth Proportional to 13,485.12, 18,604.08 and 8,767.68

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Solution

The fourth proportional to 13,485.12, 18,604.08 and 8,767.68 is: 12,095.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.12 : 18,604.08 = 8,767.68 : x
  2. Step 2: Convert to fraction form
    13,485.12/18,604.08 = 8,767.68/x
  3. Step 3: Cross multiply
    13,485.12x = 18,604.08 × 8,767.68
  4. Step 4: Simplify right side
    13,485.12x = 163,114,620.13
  5. Step 5: Solve for x
    x = 163,114,620.13/13,485.12
  6. Step 6: Final answer
    x = 12,095.90

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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.