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Finding the Fourth Proportional to 18,903,616.20, 28,355,424.30 and 9,323,584.20

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Solution

The fourth proportional to 18,903,616.20, 28,355,424.30 and 9,323,584.20 is: 13,985,376.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903,616.20 : 28,355,424.30 = 9,323,584.20 : x
  2. Step 2: Convert to fraction form
    18,903,616.20/28,355,424.30 = 9,323,584.20/x
  3. Step 3: Cross multiply
    18,903,616.20x = 28,355,424.30 × 9,323,584.20
  4. Step 4: Simplify right side
    18,903,616.20x = 264,374,185,987,776.03
  5. Step 5: Solve for x
    x = 264,374,185,987,776.03/18,903,616.20
  6. Step 6: Final answer
    x = 13,985,376.30

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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.