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Finding the Third Proportional to 13,455,428 and 20,178,996

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Solution

The third proportional to 13,455,428 and 20,178,996 is: 30,262,276.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455,428 : 20,178,996 = 20,178,996 : x
  2. Step 2: Convert to fraction form
    13,455,428/20,178,996 = 20,178,996/x
  3. Step 3: Cross multiply
    13,455,428x = 20,178,996 × 20,178,996
  4. Step 4: Simplify right side
    13,455,428x = 407,191,879,568,016
  5. Step 5: Solve for x
    x = 407,191,879,568,016/13,455,428
  6. Step 6: Final answer
    x = 30,262,276.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.