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Finding the Fourth Proportional to 12,573.84, 18,745.11 and 11,983.32

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Solution

The fourth proportional to 12,573.84, 18,745.11 and 11,983.32 is: 17,864.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,573.84 : 18,745.11 = 11,983.32 : x
  2. Step 2: Convert to fraction form
    12,573.84/18,745.11 = 11,983.32/x
  3. Step 3: Cross multiply
    12,573.84x = 18,745.11 × 11,983.32
  4. Step 4: Simplify right side
    12,573.84x = 224,628,651.57
  5. Step 5: Solve for x
    x = 224,628,651.57/12,573.84
  6. Step 6: Final answer
    x = 17,864.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.