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Finding the Fourth Proportional to 18,807.15, 25,942.07 and 12,101.49

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Solution

The fourth proportional to 18,807.15, 25,942.07 and 12,101.49 is: 16,692.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.15 : 25,942.07 = 12,101.49 : x
  2. Step 2: Convert to fraction form
    18,807.15/25,942.07 = 12,101.49/x
  3. Step 3: Cross multiply
    18,807.15x = 25,942.07 × 12,101.49
  4. Step 4: Simplify right side
    18,807.15x = 313,937,640.18
  5. Step 5: Solve for x
    x = 313,937,640.18/18,807.15
  6. Step 6: Final answer
    x = 16,692.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.