Home / 39,593.40-54,638.90-21,689.04

Finding the Fourth Proportional to 39,593.40, 54,638.90 and 21,689.04

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Solution

The fourth proportional to 39,593.40, 54,638.90 and 21,689.04 is: 29,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,593.40 : 54,638.90 = 21,689.04 : x
  2. Step 2: Convert to fraction form
    39,593.40/54,638.90 = 21,689.04/x
  3. Step 3: Cross multiply
    39,593.40x = 54,638.90 × 21,689.04
  4. Step 4: Simplify right side
    39,593.40x = 1,185,065,465.44
  5. Step 5: Solve for x
    x = 1,185,065,465.44/39,593.40
  6. Step 6: Final answer
    x = 29,930.89

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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.