Home / 55,408.13-83,112.20-13,855.13

Finding the Fourth Proportional to 55,408.13, 83,112.20 and 13,855.13

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Solution

The fourth proportional to 55,408.13, 83,112.20 and 13,855.13 is: 20,782.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,408.13 : 83,112.20 = 13,855.13 : x
  2. Step 2: Convert to fraction form
    55,408.13/83,112.20 = 13,855.13/x
  3. Step 3: Cross multiply
    55,408.13x = 83,112.20 × 13,855.13
  4. Step 4: Simplify right side
    55,408.13x = 1,151,529,850.75
  5. Step 5: Solve for x
    x = 1,151,529,850.75/55,408.13
  6. Step 6: Final answer
    x = 20,782.69

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Double scale
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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.