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Finding the Fourth Proportional to 18,978,800.40, 28,468,200.60 and 18,049,827.60

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Solution

The fourth proportional to 18,978,800.40, 28,468,200.60 and 18,049,827.60 is: 27,074,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,978,800.40 : 28,468,200.60 = 18,049,827.60 : x
  2. Step 2: Convert to fraction form
    18,978,800.40/28,468,200.60 = 18,049,827.60/x
  3. Step 3: Cross multiply
    18,978,800.40x = 28,468,200.60 × 18,049,827.60
  4. Step 4: Simplify right side
    18,978,800.40x = 513,846,112,912,216.62
  5. Step 5: Solve for x
    x = 513,846,112,912,216.62/18,978,800.40
  6. Step 6: Final answer
    x = 27,074,741.40

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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.