Home / 14,845.45-20,487.03-8,131.36

Finding the Fourth Proportional to 14,845.45, 20,487.03 and 8,131.36

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Solution

The fourth proportional to 14,845.45, 20,487.03 and 8,131.36 is: 11,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,845.45 : 20,487.03 = 8,131.36 : x
  2. Step 2: Convert to fraction form
    14,845.45/20,487.03 = 8,131.36/x
  3. Step 3: Cross multiply
    14,845.45x = 20,487.03 × 8,131.36
  4. Step 4: Simplify right side
    14,845.45x = 166,587,416.26
  5. Step 5: Solve for x
    x = 166,587,416.26/14,845.45
  6. Step 6: Final answer
    x = 11,221.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.