Home / 11,990.24-17,988.09-3,670.90

Finding the Fourth Proportional to 11,990.24, 17,988.09 and 3,670.90

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Solution

The fourth proportional to 11,990.24, 17,988.09 and 3,670.90 is: 5,507.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.24 : 17,988.09 = 3,670.90 : x
  2. Step 2: Convert to fraction form
    11,990.24/17,988.09 = 3,670.90/x
  3. Step 3: Cross multiply
    11,990.24x = 17,988.09 × 3,670.90
  4. Step 4: Simplify right side
    11,990.24x = 66,032,479.58
  5. Step 5: Solve for x
    x = 66,032,479.58/11,990.24
  6. Step 6: Final answer
    x = 5,507.19

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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.