Home / 13,667.12-20,487.84-12,449.76

Finding the Fourth Proportional to 13,667.12, 20,487.84 and 12,449.76

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Solution

The fourth proportional to 13,667.12, 20,487.84 and 12,449.76 is: 18,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.12 : 20,487.84 = 12,449.76 : x
  2. Step 2: Convert to fraction form
    13,667.12/20,487.84 = 12,449.76/x
  3. Step 3: Cross multiply
    13,667.12x = 20,487.84 × 12,449.76
  4. Step 4: Simplify right side
    13,667.12x = 255,068,690.92
  5. Step 5: Solve for x
    x = 255,068,690.92/13,667.12
  6. Step 6: Final answer
    x = 18,662.94

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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.