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Finding the Fourth Proportional to 18,881.80, 28,323.34 and 5,734.13

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Solution

The fourth proportional to 18,881.80, 28,323.34 and 5,734.13 is: 8,601.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,881.80 : 28,323.34 = 5,734.13 : x
  2. Step 2: Convert to fraction form
    18,881.80/28,323.34 = 5,734.13/x
  3. Step 3: Cross multiply
    18,881.80x = 28,323.34 × 5,734.13
  4. Step 4: Simplify right side
    18,881.80x = 162,409,557.64
  5. Step 5: Solve for x
    x = 162,409,557.64/18,881.80
  6. Step 6: Final answer
    x = 8,601.38

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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.