Home / 12,042.14-18,065.16-3,720.21

Finding the Fourth Proportional to 12,042.14, 18,065.16 and 3,720.21

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Solution

The fourth proportional to 12,042.14, 18,065.16 and 3,720.21 is: 5,580.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,042.14 : 18,065.16 = 3,720.21 : x
  2. Step 2: Convert to fraction form
    12,042.14/18,065.16 = 3,720.21/x
  3. Step 3: Cross multiply
    12,042.14x = 18,065.16 × 3,720.21
  4. Step 4: Simplify right side
    12,042.14x = 67,206,188.88
  5. Step 5: Solve for x
    x = 67,206,188.88/12,042.14
  6. Step 6: Final answer
    x = 5,580.92

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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.