Home / 12,012.60-18,019.80-3,247.56

Finding the Fourth Proportional to 12,012.60, 18,019.80 and 3,247.56

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Solution

The fourth proportional to 12,012.60, 18,019.80 and 3,247.56 is: 4,871.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.60 : 18,019.80 = 3,247.56 : x
  2. Step 2: Convert to fraction form
    12,012.60/18,019.80 = 3,247.56/x
  3. Step 3: Cross multiply
    12,012.60x = 18,019.80 × 3,247.56
  4. Step 4: Simplify right side
    12,012.60x = 58,520,381.69
  5. Step 5: Solve for x
    x = 58,520,381.69/12,012.60
  6. Step 6: Final answer
    x = 4,871.58

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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.