Home / 55,171.09-82,756.64-13,618.09

Finding the Fourth Proportional to 55,171.09, 82,756.64 and 13,618.09

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Solution

The fourth proportional to 55,171.09, 82,756.64 and 13,618.09 is: 20,427.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,171.09 : 82,756.64 = 13,618.09 : x
  2. Step 2: Convert to fraction form
    55,171.09/82,756.64 = 13,618.09/x
  3. Step 3: Cross multiply
    55,171.09x = 82,756.64 × 13,618.09
  4. Step 4: Simplify right side
    55,171.09x = 1,126,987,371.62
  5. Step 5: Solve for x
    x = 1,126,987,371.62/55,171.09
  6. Step 6: Final answer
    x = 20,427.14

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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.