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Finding the Fourth Proportional to 18,853.62, 28,237.36 and 8,999.84

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Solution

The fourth proportional to 18,853.62, 28,237.36 and 8,999.84 is: 13,479.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.62 : 28,237.36 = 8,999.84 : x
  2. Step 2: Convert to fraction form
    18,853.62/28,237.36 = 8,999.84/x
  3. Step 3: Cross multiply
    18,853.62x = 28,237.36 × 8,999.84
  4. Step 4: Simplify right side
    18,853.62x = 254,131,722.02
  5. Step 5: Solve for x
    x = 254,131,722.02/18,853.62
  6. Step 6: Final answer
    x = 13,479.20

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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.