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Finding the Fourth Proportional to 39,353.62, 59,047.89 and 20,629.21

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Solution

The fourth proportional to 39,353.62, 59,047.89 and 20,629.21 is: 30,952.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,353.62 : 59,047.89 = 20,629.21 : x
  2. Step 2: Convert to fraction form
    39,353.62/59,047.89 = 20,629.21/x
  3. Step 3: Cross multiply
    39,353.62x = 59,047.89 × 20,629.21
  4. Step 4: Simplify right side
    39,353.62x = 1,218,111,322.87
  5. Step 5: Solve for x
    x = 1,218,111,322.87/39,353.62
  6. Step 6: Final answer
    x = 30,952.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.