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Finding the Fourth Proportional to 11,995.87, 17,989.48 and 5,070.91

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Solution

The fourth proportional to 11,995.87, 17,989.48 and 5,070.91 is: 7,604.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,995.87 : 17,989.48 = 5,070.91 : x
  2. Step 2: Convert to fraction form
    11,995.87/17,989.48 = 5,070.91/x
  3. Step 3: Cross multiply
    11,995.87x = 17,989.48 × 5,070.91
  4. Step 4: Simplify right side
    11,995.87x = 91,223,034.03
  5. Step 5: Solve for x
    x = 91,223,034.03/11,995.87
  6. Step 6: Final answer
    x = 7,604.54

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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.