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Finding the Fourth Proportional to 12,343.35, 18,515.03 and 3,109.35

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Solution

The fourth proportional to 12,343.35, 18,515.03 and 3,109.35 is: 4,664.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.35 : 18,515.03 = 3,109.35 : x
  2. Step 2: Convert to fraction form
    12,343.35/18,515.03 = 3,109.35/x
  3. Step 3: Cross multiply
    12,343.35x = 18,515.03 × 3,109.35
  4. Step 4: Simplify right side
    12,343.35x = 57,569,692.98
  5. Step 5: Solve for x
    x = 57,569,692.98/12,343.35
  6. Step 6: Final answer
    x = 4,664.03

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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.