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Finding the Fourth Proportional to 36,638.28, 50,560.80 and 19,871.28

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Solution

The fourth proportional to 36,638.28, 50,560.80 and 19,871.28 is: 27,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,638.28 : 50,560.80 = 19,871.28 : x
  2. Step 2: Convert to fraction form
    36,638.28/50,560.80 = 19,871.28/x
  3. Step 3: Cross multiply
    36,638.28x = 50,560.80 × 19,871.28
  4. Step 4: Simplify right side
    36,638.28x = 1,004,707,813.82
  5. Step 5: Solve for x
    x = 1,004,707,813.82/36,638.28
  6. Step 6: Final answer
    x = 27,422.35

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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.