Home / 12,172.17-18,262.65-4,276.86

Finding the Fourth Proportional to 12,172.17, 18,262.65 and 4,276.86

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Solution

The fourth proportional to 12,172.17, 18,262.65 and 4,276.86 is: 6,416.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.17 : 18,262.65 = 4,276.86 : x
  2. Step 2: Convert to fraction form
    12,172.17/18,262.65 = 4,276.86/x
  3. Step 3: Cross multiply
    12,172.17x = 18,262.65 × 4,276.86
  4. Step 4: Simplify right side
    12,172.17x = 78,106,797.28
  5. Step 5: Solve for x
    x = 78,106,797.28/12,172.17
  6. Step 6: Final answer
    x = 6,416.83

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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.