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Finding the Fourth Proportional to 12,673,721.60, 18,996,585.60 and 6,998,019.20

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Solution

The fourth proportional to 12,673,721.60, 18,996,585.60 and 6,998,019.20 is: 10,489,300.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,673,721.60 : 18,996,585.60 = 6,998,019.20 : x
  2. Step 2: Convert to fraction form
    12,673,721.60/18,996,585.60 = 6,998,019.20/x
  3. Step 3: Cross multiply
    12,673,721.60x = 18,996,585.60 × 6,998,019.20
  4. Step 4: Simplify right side
    12,673,721.60x = 132,938,470,763,243.53
  5. Step 5: Solve for x
    x = 132,938,470,763,243.53/12,673,721.60
  6. Step 6: Final answer
    x = 10,489,300.22

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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.