Home / 13,213.48-18,238.08-8,176.90

Finding the Fourth Proportional to 13,213.48, 18,238.08 and 8,176.90

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Solution

The fourth proportional to 13,213.48, 18,238.08 and 8,176.90 is: 11,286.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.48 : 18,238.08 = 8,176.90 : x
  2. Step 2: Convert to fraction form
    13,213.48/18,238.08 = 8,176.90/x
  3. Step 3: Cross multiply
    13,213.48x = 18,238.08 × 8,176.90
  4. Step 4: Simplify right side
    13,213.48x = 149,130,956.35
  5. Step 5: Solve for x
    x = 149,130,956.35/13,213.48
  6. Step 6: Final answer
    x = 11,286.27

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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.