Home / 27,708.05-38,187.68-20,977.56

Finding the Fourth Proportional to 27,708.05, 38,187.68 and 20,977.56

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Solution

The fourth proportional to 27,708.05, 38,187.68 and 20,977.56 is: 28,911.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,708.05 : 38,187.68 = 20,977.56 : x
  2. Step 2: Convert to fraction form
    27,708.05/38,187.68 = 20,977.56/x
  3. Step 3: Cross multiply
    27,708.05x = 38,187.68 × 20,977.56
  4. Step 4: Simplify right side
    27,708.05x = 801,084,243.57
  5. Step 5: Solve for x
    x = 801,084,243.57/27,708.05
  6. Step 6: Final answer
    x = 28,911.60

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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.