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Finding the Fourth Proportional to 11,992.45, 17,989.95 and 4,603.22

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Solution

The fourth proportional to 11,992.45, 17,989.95 and 4,603.22 is: 6,905.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,992.45 : 17,989.95 = 4,603.22 : x
  2. Step 2: Convert to fraction form
    11,992.45/17,989.95 = 4,603.22/x
  3. Step 3: Cross multiply
    11,992.45x = 17,989.95 × 4,603.22
  4. Step 4: Simplify right side
    11,992.45x = 82,811,697.64
  5. Step 5: Solve for x
    x = 82,811,697.64/11,992.45
  6. Step 6: Final answer
    x = 6,905.32

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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.