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Finding the Fourth Proportional to 16,642,690.40, 24,964,035.60 and 8,118,639.20

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Solution

The fourth proportional to 16,642,690.40, 24,964,035.60 and 8,118,639.20 is: 12,177,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,642,690.40 : 24,964,035.60 = 8,118,639.20 : x
  2. Step 2: Convert to fraction form
    16,642,690.40/24,964,035.60 = 8,118,639.20/x
  3. Step 3: Cross multiply
    16,642,690.40x = 24,964,035.60 × 8,118,639.20
  4. Step 4: Simplify right side
    16,642,690.40x = 202,673,998,012,355.53
  5. Step 5: Solve for x
    x = 202,673,998,012,355.53/16,642,690.40
  6. Step 6: Final answer
    x = 12,177,958.80

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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.