Home / 13,540.08-20,297.78-5,214.76

Finding the Fourth Proportional to 13,540.08, 20,297.78 and 5,214.76

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Solution

The fourth proportional to 13,540.08, 20,297.78 and 5,214.76 is: 7,817.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.08 : 20,297.78 = 5,214.76 : x
  2. Step 2: Convert to fraction form
    13,540.08/20,297.78 = 5,214.76/x
  3. Step 3: Cross multiply
    13,540.08x = 20,297.78 × 5,214.76
  4. Step 4: Simplify right side
    13,540.08x = 105,848,051.23
  5. Step 5: Solve for x
    x = 105,848,051.23/13,540.08
  6. Step 6: Final answer
    x = 7,817.39

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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.