Home / 11,385.90-17,081.19-4,812.12

Finding the Fourth Proportional to 11,385.90, 17,081.19 and 4,812.12

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Solution

The fourth proportional to 11,385.90, 17,081.19 and 4,812.12 is: 7,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.90 : 17,081.19 = 4,812.12 : x
  2. Step 2: Convert to fraction form
    11,385.90/17,081.19 = 4,812.12/x
  3. Step 3: Cross multiply
    11,385.90x = 17,081.19 × 4,812.12
  4. Step 4: Simplify right side
    11,385.90x = 82,196,736.02
  5. Step 5: Solve for x
    x = 82,196,736.02/11,385.90
  6. Step 6: Final answer
    x = 7,219.17

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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.