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Finding the Fourth Proportional to 28,584.87, 42,891.93 and 13,608.92

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Solution

The fourth proportional to 28,584.87, 42,891.93 and 13,608.92 is: 20,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,584.87 : 42,891.93 = 13,608.92 : x
  2. Step 2: Convert to fraction form
    28,584.87/42,891.93 = 13,608.92/x
  3. Step 3: Cross multiply
    28,584.87x = 42,891.93 × 13,608.92
  4. Step 4: Simplify right side
    28,584.87x = 583,712,629.56
  5. Step 5: Solve for x
    x = 583,712,629.56/28,584.87
  6. Step 6: Final answer
    x = 20,420.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.