Home / 28,638.77-39,513.42-18,567.63

Finding the Fourth Proportional to 28,638.77, 39,513.42 and 18,567.63

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Solution

The fourth proportional to 28,638.77, 39,513.42 and 18,567.63 is: 25,618.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.77 : 39,513.42 = 18,567.63 : x
  2. Step 2: Convert to fraction form
    28,638.77/39,513.42 = 18,567.63/x
  3. Step 3: Cross multiply
    28,638.77x = 39,513.42 × 18,567.63
  4. Step 4: Simplify right side
    28,638.77x = 733,670,562.59
  5. Step 5: Solve for x
    x = 733,670,562.59/28,638.77
  6. Step 6: Final answer
    x = 25,618.09

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Double scale
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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.