Home / 39,801.76-54,925.62-21,896.30

Finding the Fourth Proportional to 39,801.76, 54,925.62 and 21,896.30

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Solution

The fourth proportional to 39,801.76, 54,925.62 and 21,896.30 is: 30,216.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,801.76 : 54,925.62 = 21,896.30 : x
  2. Step 2: Convert to fraction form
    39,801.76/54,925.62 = 21,896.30/x
  3. Step 3: Cross multiply
    39,801.76x = 54,925.62 × 21,896.30
  4. Step 4: Simplify right side
    39,801.76x = 1,202,667,853.21
  5. Step 5: Solve for x
    x = 1,202,667,853.21/39,801.76
  6. Step 6: Final answer
    x = 30,216.45

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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.