Home / 39,545.09-54,570.89-21,638.89

Finding the Fourth Proportional to 39,545.09, 54,570.89 and 21,638.89

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Solution

The fourth proportional to 39,545.09, 54,570.89 and 21,638.89 is: 29,860.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,545.09 : 54,570.89 = 21,638.89 : x
  2. Step 2: Convert to fraction form
    39,545.09/54,570.89 = 21,638.89/x
  3. Step 3: Cross multiply
    39,545.09x = 54,570.89 × 21,638.89
  4. Step 4: Simplify right side
    39,545.09x = 1,180,853,403.58
  5. Step 5: Solve for x
    x = 1,180,853,403.58/39,545.09
  6. Step 6: Final answer
    x = 29,860.94

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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.