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Finding the Fourth Proportional to 39,574.56, 54,613.56 and 21,669.28

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Solution

The fourth proportional to 39,574.56, 54,613.56 and 21,669.28 is: 29,903.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,574.56 : 54,613.56 = 21,669.28 : x
  2. Step 2: Convert to fraction form
    39,574.56/54,613.56 = 21,669.28/x
  3. Step 3: Cross multiply
    39,574.56x = 54,613.56 × 21,669.28
  4. Step 4: Simplify right side
    39,574.56x = 1,183,436,523.44
  5. Step 5: Solve for x
    x = 1,183,436,523.44/39,574.56
  6. Step 6: Final answer
    x = 29,903.97

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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.