Home / 20,101.29-27,738.83-11,148.60

Finding the Fourth Proportional to 20,101.29, 27,738.83 and 11,148.60

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Solution

The fourth proportional to 20,101.29, 27,738.83 and 11,148.60 is: 15,384.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.29 : 27,738.83 = 11,148.60 : x
  2. Step 2: Convert to fraction form
    20,101.29/27,738.83 = 11,148.60/x
  3. Step 3: Cross multiply
    20,101.29x = 27,738.83 × 11,148.60
  4. Step 4: Simplify right side
    20,101.29x = 309,249,064.40
  5. Step 5: Solve for x
    x = 309,249,064.40/20,101.29
  6. Step 6: Final answer
    x = 15,384.54

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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.