Home / 12,020.47-18,028.58-4,621.12

Finding the Fourth Proportional to 12,020.47, 18,028.58 and 4,621.12

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Solution

The fourth proportional to 12,020.47, 18,028.58 and 4,621.12 is: 6,930.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.47 : 18,028.58 = 4,621.12 : x
  2. Step 2: Convert to fraction form
    12,020.47/18,028.58 = 4,621.12/x
  3. Step 3: Cross multiply
    12,020.47x = 18,028.58 × 4,621.12
  4. Step 4: Simplify right side
    12,020.47x = 83,312,163.43
  5. Step 5: Solve for x
    x = 83,312,163.43/12,020.47
  6. Step 6: Final answer
    x = 6,930.86

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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.