Home / 27,388.40-37,785.86-20,235.54

Finding the Fourth Proportional to 27,388.40, 37,785.86 and 20,235.54

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Solution

The fourth proportional to 27,388.40, 37,785.86 and 20,235.54 is: 27,917.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,388.40 : 37,785.86 = 20,235.54 : x
  2. Step 2: Convert to fraction form
    27,388.40/37,785.86 = 20,235.54/x
  3. Step 3: Cross multiply
    27,388.40x = 37,785.86 × 20,235.54
  4. Step 4: Simplify right side
    27,388.40x = 764,617,281.46
  5. Step 5: Solve for x
    x = 764,617,281.46/27,388.40
  6. Step 6: Final answer
    x = 27,917.56

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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.