Home / 55,201.19-82,814.09-20,140.83

Finding the Fourth Proportional to 55,201.19, 82,814.09 and 20,140.83

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Solution

The fourth proportional to 55,201.19, 82,814.09 and 20,140.83 is: 30,215.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,201.19 : 82,814.09 = 20,140.83 : x
  2. Step 2: Convert to fraction form
    55,201.19/82,814.09 = 20,140.83/x
  3. Step 3: Cross multiply
    55,201.19x = 82,814.09 × 20,140.83
  4. Step 4: Simplify right side
    55,201.19x = 1,667,944,407.59
  5. Step 5: Solve for x
    x = 1,667,944,407.59/55,201.19
  6. Step 6: Final answer
    x = 30,215.74

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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.