Home / 13,190.48-18,189.05-8,708.34

Finding the Fourth Proportional to 13,190.48, 18,189.05 and 8,708.34

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Solution

The fourth proportional to 13,190.48, 18,189.05 and 8,708.34 is: 12,008.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.48 : 18,189.05 = 8,708.34 : x
  2. Step 2: Convert to fraction form
    13,190.48/18,189.05 = 8,708.34/x
  3. Step 3: Cross multiply
    13,190.48x = 18,189.05 × 8,708.34
  4. Step 4: Simplify right side
    13,190.48x = 158,396,388.14
  5. Step 5: Solve for x
    x = 158,396,388.14/13,190.48
  6. Step 6: Final answer
    x = 12,008.39

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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.