Home / 12,121.64-18,184.62-4,328.63

Finding the Fourth Proportional to 12,121.64, 18,184.62 and 4,328.63

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Solution

The fourth proportional to 12,121.64, 18,184.62 and 4,328.63 is: 6,493.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.64 : 18,184.62 = 4,328.63 : x
  2. Step 2: Convert to fraction form
    12,121.64/18,184.62 = 4,328.63/x
  3. Step 3: Cross multiply
    12,121.64x = 18,184.62 × 4,328.63
  4. Step 4: Simplify right side
    12,121.64x = 78,714,491.67
  5. Step 5: Solve for x
    x = 78,714,491.67/12,121.64
  6. Step 6: Final answer
    x = 6,493.72

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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.