Home / 28,365.41-39,143.93-15,618.33

Finding the Fourth Proportional to 28,365.41, 39,143.93 and 15,618.33

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Solution

The fourth proportional to 28,365.41, 39,143.93 and 15,618.33 is: 21,553.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.41 : 39,143.93 = 15,618.33 : x
  2. Step 2: Convert to fraction form
    28,365.41/39,143.93 = 15,618.33/x
  3. Step 3: Cross multiply
    28,365.41x = 39,143.93 × 15,618.33
  4. Step 4: Simplify right side
    28,365.41x = 611,362,659.56
  5. Step 5: Solve for x
    x = 611,362,659.56/28,365.41
  6. Step 6: Final answer
    x = 21,553.11

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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.