Home / 39,858.06-55,004.46-21,953.68

Finding the Fourth Proportional to 39,858.06, 55,004.46 and 21,953.68

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Solution

The fourth proportional to 39,858.06, 55,004.46 and 21,953.68 is: 30,296.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,858.06 : 55,004.46 = 21,953.68 : x
  2. Step 2: Convert to fraction form
    39,858.06/55,004.46 = 21,953.68/x
  3. Step 3: Cross multiply
    39,858.06x = 55,004.46 × 21,953.68
  4. Step 4: Simplify right side
    39,858.06x = 1,207,550,313.41
  5. Step 5: Solve for x
    x = 1,207,550,313.41/39,858.06
  6. Step 6: Final answer
    x = 30,296.26

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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.