Home / 13,631.69-20,447.54-4,272.43

Finding the Fourth Proportional to 13,631.69, 20,447.54 and 4,272.43

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Solution

The fourth proportional to 13,631.69, 20,447.54 and 4,272.43 is: 6,408.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.69 : 20,447.54 = 4,272.43 : x
  2. Step 2: Convert to fraction form
    13,631.69/20,447.54 = 4,272.43/x
  3. Step 3: Cross multiply
    13,631.69x = 20,447.54 × 4,272.43
  4. Step 4: Simplify right side
    13,631.69x = 87,360,749.32
  5. Step 5: Solve for x
    x = 87,360,749.32/13,631.69
  6. Step 6: Final answer
    x = 6,408.65

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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.