Home / 12,620.46-18,930.70-4,296.20

Finding the Fourth Proportional to 12,620.46, 18,930.70 and 4,296.20

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Solution

The fourth proportional to 12,620.46, 18,930.70 and 4,296.20 is: 6,444.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.46 : 18,930.70 = 4,296.20 : x
  2. Step 2: Convert to fraction form
    12,620.46/18,930.70 = 4,296.20/x
  3. Step 3: Cross multiply
    12,620.46x = 18,930.70 × 4,296.20
  4. Step 4: Simplify right side
    12,620.46x = 81,329,959.89
  5. Step 5: Solve for x
    x = 81,329,959.89/12,620.46
  6. Step 6: Final answer
    x = 6,444.29

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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.