Home / 14,786.46-20,405.57-8,821.62

Finding the Fourth Proportional to 14,786.46, 20,405.57 and 8,821.62

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Solution

The fourth proportional to 14,786.46, 20,405.57 and 8,821.62 is: 12,173.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,786.46 : 20,405.57 = 8,821.62 : x
  2. Step 2: Convert to fraction form
    14,786.46/20,405.57 = 8,821.62/x
  3. Step 3: Cross multiply
    14,786.46x = 20,405.57 × 8,821.62
  4. Step 4: Simplify right side
    14,786.46x = 180,010,140.32
  5. Step 5: Solve for x
    x = 180,010,140.32/14,786.46
  6. Step 6: Final answer
    x = 12,173.98

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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.