Home / 28,616.19-39,489.92-15,869.39

Finding the Fourth Proportional to 28,616.19, 39,489.92 and 15,869.39

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Solution

The fourth proportional to 28,616.19, 39,489.92 and 15,869.39 is: 21,899.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.19 : 39,489.92 = 15,869.39 : x
  2. Step 2: Convert to fraction form
    28,616.19/39,489.92 = 15,869.39/x
  3. Step 3: Cross multiply
    28,616.19x = 39,489.92 × 15,869.39
  4. Step 4: Simplify right side
    28,616.19x = 626,681,020.44
  5. Step 5: Solve for x
    x = 626,681,020.44/28,616.19
  6. Step 6: Final answer
    x = 21,899.53

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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.