Home / 12,471.15-18,692.60-4,149.21

Finding the Fourth Proportional to 12,471.15, 18,692.60 and 4,149.21

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Solution

The fourth proportional to 12,471.15, 18,692.60 and 4,149.21 is: 6,219.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.15 : 18,692.60 = 4,149.21 : x
  2. Step 2: Convert to fraction form
    12,471.15/18,692.60 = 4,149.21/x
  3. Step 3: Cross multiply
    12,471.15x = 18,692.60 × 4,149.21
  4. Step 4: Simplify right side
    12,471.15x = 77,559,502.10
  5. Step 5: Solve for x
    x = 77,559,502.10/12,471.15
  6. Step 6: Final answer
    x = 6,219.11

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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.