Home / 39,784.58-54,901.24-21,879.40

Finding the Fourth Proportional to 39,784.58, 54,901.24 and 21,879.40

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Solution

The fourth proportional to 39,784.58, 54,901.24 and 21,879.40 is: 30,192.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,784.58 : 54,901.24 = 21,879.40 : x
  2. Step 2: Convert to fraction form
    39,784.58/54,901.24 = 21,879.40/x
  3. Step 3: Cross multiply
    39,784.58x = 54,901.24 × 21,879.40
  4. Step 4: Simplify right side
    39,784.58x = 1,201,206,190.46
  5. Step 5: Solve for x
    x = 1,201,206,190.46/39,784.58
  6. Step 6: Final answer
    x = 30,192.76

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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.