Home / 11,988.36-17,992.17-5,415.12

Finding the Fourth Proportional to 11,988.36, 17,992.17 and 5,415.12

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Solution

The fourth proportional to 11,988.36, 17,992.17 and 5,415.12 is: 8,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.36 : 17,992.17 = 5,415.12 : x
  2. Step 2: Convert to fraction form
    11,988.36/17,992.17 = 5,415.12/x
  3. Step 3: Cross multiply
    11,988.36x = 17,992.17 × 5,415.12
  4. Step 4: Simplify right side
    11,988.36x = 97,429,759.61
  5. Step 5: Solve for x
    x = 97,429,759.61/11,988.36
  6. Step 6: Final answer
    x = 8,127.03

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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.