Home / 12,621.80-18,934.70-4,302.60

Finding the Fourth Proportional to 12,621.80, 18,934.70 and 4,302.60

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Solution

The fourth proportional to 12,621.80, 18,934.70 and 4,302.60 is: 6,454.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.80 : 18,934.70 = 4,302.60 : x
  2. Step 2: Convert to fraction form
    12,621.80/18,934.70 = 4,302.60/x
  3. Step 3: Cross multiply
    12,621.80x = 18,934.70 × 4,302.60
  4. Step 4: Simplify right side
    12,621.80x = 81,468,440.22
  5. Step 5: Solve for x
    x = 81,468,440.22/12,621.80
  6. Step 6: Final answer
    x = 6,454.58

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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.