Home / 13,445.60-20,171.09-7,530.90

Finding the Fourth Proportional to 13,445.60, 20,171.09 and 7,530.90

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Solution

The fourth proportional to 13,445.60, 20,171.09 and 7,530.90 is: 11,297.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.60 : 20,171.09 = 7,530.90 : x
  2. Step 2: Convert to fraction form
    13,445.60/20,171.09 = 7,530.90/x
  3. Step 3: Cross multiply
    13,445.60x = 20,171.09 × 7,530.90
  4. Step 4: Simplify right side
    13,445.60x = 151,906,424.03
  5. Step 5: Solve for x
    x = 151,906,424.03/13,445.60
  6. Step 6: Final answer
    x = 11,297.86

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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.