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Finding the Fourth Proportional to 12,982,906.40, 19,477,124.40 and 4,008,365.60

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Solution

The fourth proportional to 12,982,906.40, 19,477,124.40 and 4,008,365.60 is: 6,013,402.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982,906.40 : 19,477,124.40 = 4,008,365.60 : x
  2. Step 2: Convert to fraction form
    12,982,906.40/19,477,124.40 = 4,008,365.60/x
  3. Step 3: Cross multiply
    12,982,906.40x = 19,477,124.40 × 4,008,365.60
  4. Step 4: Simplify right side
    12,982,906.40x = 78,071,435,431,880.64
  5. Step 5: Solve for x
    x = 78,071,435,431,880.64/12,982,906.40
  6. Step 6: Final answer
    x = 6,013,402.01

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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.