Home / 13,622.77-20,405.80-8,667.87

Finding the Fourth Proportional to 13,622.77, 20,405.80 and 8,667.87

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Solution

The fourth proportional to 13,622.77, 20,405.80 and 8,667.87 is: 12,983.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.77 : 20,405.80 = 8,667.87 : x
  2. Step 2: Convert to fraction form
    13,622.77/20,405.80 = 8,667.87/x
  3. Step 3: Cross multiply
    13,622.77x = 20,405.80 × 8,667.87
  4. Step 4: Simplify right side
    13,622.77x = 176,874,821.65
  5. Step 5: Solve for x
    x = 176,874,821.65/13,622.77
  6. Step 6: Final answer
    x = 12,983.76

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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.