Home / 39,823.18-54,955.56-21,917.80

Finding the Fourth Proportional to 39,823.18, 54,955.56 and 21,917.80

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Solution

The fourth proportional to 39,823.18, 54,955.56 and 21,917.80 is: 30,246.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,823.18 : 54,955.56 = 21,917.80 : x
  2. Step 2: Convert to fraction form
    39,823.18/54,955.56 = 21,917.80/x
  3. Step 3: Cross multiply
    39,823.18x = 54,955.56 × 21,917.80
  4. Step 4: Simplify right side
    39,823.18x = 1,204,504,698.19
  5. Step 5: Solve for x
    x = 1,204,504,698.19/39,823.18
  6. Step 6: Final answer
    x = 30,246.33

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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.