Home / 12,012.24-18,002.42-6,388.74

Finding the Fourth Proportional to 12,012.24, 18,002.42 and 6,388.74

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Solution

The fourth proportional to 12,012.24, 18,002.42 and 6,388.74 is: 9,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.24 : 18,002.42 = 6,388.74 : x
  2. Step 2: Convert to fraction form
    12,012.24/18,002.42 = 6,388.74/x
  3. Step 3: Cross multiply
    12,012.24x = 18,002.42 × 6,388.74
  4. Step 4: Simplify right side
    12,012.24x = 115,012,780.75
  5. Step 5: Solve for x
    x = 115,012,780.75/12,012.24
  6. Step 6: Final answer
    x = 9,574.63

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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.