Home / 13,434.48-18,534.16-8,120.07

Finding the Fourth Proportional to 13,434.48, 18,534.16 and 8,120.07

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Solution

The fourth proportional to 13,434.48, 18,534.16 and 8,120.07 is: 11,202.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,434.48 : 18,534.16 = 8,120.07 : x
  2. Step 2: Convert to fraction form
    13,434.48/18,534.16 = 8,120.07/x
  3. Step 3: Cross multiply
    13,434.48x = 18,534.16 × 8,120.07
  4. Step 4: Simplify right side
    13,434.48x = 150,498,676.59
  5. Step 5: Solve for x
    x = 150,498,676.59/13,434.48
  6. Step 6: Final answer
    x = 11,202.42

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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.