Home / 12,408.21-18,581.49-8,693.01

Finding the Fourth Proportional to 12,408.21, 18,581.49 and 8,693.01

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Solution

The fourth proportional to 12,408.21, 18,581.49 and 8,693.01 is: 13,017.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,408.21 : 18,581.49 = 8,693.01 : x
  2. Step 2: Convert to fraction form
    12,408.21/18,581.49 = 8,693.01/x
  3. Step 3: Cross multiply
    12,408.21x = 18,581.49 × 8,693.01
  4. Step 4: Simplify right side
    12,408.21x = 161,529,078.38
  5. Step 5: Solve for x
    x = 161,529,078.38/12,408.21
  6. Step 6: Final answer
    x = 13,017.92

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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.