Home / 18,018.40-26,991.78-14,104.48

Finding the Fourth Proportional to 18,018.40, 26,991.78 and 14,104.48

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Solution

The fourth proportional to 18,018.40, 26,991.78 and 14,104.48 is: 21,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.40 : 26,991.78 = 14,104.48 : x
  2. Step 2: Convert to fraction form
    18,018.40/26,991.78 = 14,104.48/x
  3. Step 3: Cross multiply
    18,018.40x = 26,991.78 × 14,104.48
  4. Step 4: Simplify right side
    18,018.40x = 380,705,021.17
  5. Step 5: Solve for x
    x = 380,705,021.17/18,018.40
  6. Step 6: Final answer
    x = 21,128.68

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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.