Home / 39,513.69-54,530.19-21,608.69

Finding the Fourth Proportional to 39,513.69, 54,530.19 and 21,608.69

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Solution

The fourth proportional to 39,513.69, 54,530.19 and 21,608.69 is: 29,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,513.69 : 54,530.19 = 21,608.69 : x
  2. Step 2: Convert to fraction form
    39,513.69/54,530.19 = 21,608.69/x
  3. Step 3: Cross multiply
    39,513.69x = 54,530.19 × 21,608.69
  4. Step 4: Simplify right side
    39,513.69x = 1,178,325,698.70
  5. Step 5: Solve for x
    x = 1,178,325,698.70/39,513.69
  6. Step 6: Final answer
    x = 29,820.70

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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.