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Finding the Fourth Proportional to 12,977,269.20, 19,465,903.80 and 12,424,395.60

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Solution

The fourth proportional to 12,977,269.20, 19,465,903.80 and 12,424,395.60 is: 18,636,593.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977,269.20 : 19,465,903.80 = 12,424,395.60 : x
  2. Step 2: Convert to fraction form
    12,977,269.20/19,465,903.80 = 12,424,395.60/x
  3. Step 3: Cross multiply
    12,977,269.20x = 19,465,903.80 × 12,424,395.60
  4. Step 4: Simplify right side
    12,977,269.20x = 241,852,089,522,743.28
  5. Step 5: Solve for x
    x = 241,852,089,522,743.28/12,977,269.20
  6. Step 6: Final answer
    x = 18,636,593.40

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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.