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Finding the Third Proportional to 12,086,821.69 and 18,742,957.03

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Solution

The third proportional to 12,086,821.69 and 18,742,957.03 is: 29,064,583.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086,821.69 : 18,742,957.03 = 18,742,957.03 : x
  2. Step 2: Convert to fraction form
    12,086,821.69/18,742,957.03 = 18,742,957.03/x
  3. Step 3: Cross multiply
    12,086,821.69x = 18,742,957.03 × 18,742,957.03
  4. Step 4: Simplify right side
    12,086,821.69x = 351,298,438,275,283.81
  5. Step 5: Solve for x
    x = 351,298,438,275,283.81/12,086,821.69
  6. Step 6: Final answer
    x = 29,064,583.51

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.