Home / 13,606.72-20,408.64-4,372

Finding the Fourth Proportional to 13,606.72, 20,408.64 and 4,372

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Solution

The fourth proportional to 13,606.72, 20,408.64 and 4,372 is: 6,557.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.72 : 20,408.64 = 4,372 : x
  2. Step 2: Convert to fraction form
    13,606.72/20,408.64 = 4,372/x
  3. Step 3: Cross multiply
    13,606.72x = 20,408.64 × 4,372
  4. Step 4: Simplify right side
    13,606.72x = 89,226,574.08
  5. Step 5: Solve for x
    x = 89,226,574.08/13,606.72
  6. Step 6: Final answer
    x = 6,557.54

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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.