Home / 12,012.90-18,019.31-3,247.81

Finding the Fourth Proportional to 12,012.90, 18,019.31 and 3,247.81

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Solution

The fourth proportional to 12,012.90, 18,019.31 and 3,247.81 is: 4,871.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.90 : 18,019.31 = 3,247.81 : x
  2. Step 2: Convert to fraction form
    12,012.90/18,019.31 = 3,247.81/x
  3. Step 3: Cross multiply
    12,012.90x = 18,019.31 × 3,247.81
  4. Step 4: Simplify right side
    12,012.90x = 58,523,332.14
  5. Step 5: Solve for x
    x = 58,523,332.14/12,012.90
  6. Step 6: Final answer
    x = 4,871.71

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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.