Home / 39,577.18-54,614.10-21,672.40

Finding the Fourth Proportional to 39,577.18, 54,614.10 and 21,672.40

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Solution

The fourth proportional to 39,577.18, 54,614.10 and 21,672.40 is: 29,906.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,577.18 : 54,614.10 = 21,672.40 : x
  2. Step 2: Convert to fraction form
    39,577.18/54,614.10 = 21,672.40/x
  3. Step 3: Cross multiply
    39,577.18x = 54,614.10 × 21,672.40
  4. Step 4: Simplify right side
    39,577.18x = 1,183,618,620.84
  5. Step 5: Solve for x
    x = 1,183,618,620.84/39,577.18
  6. Step 6: Final answer
    x = 29,906.59

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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.