Home / 13,728,406.80-18,940,508.78-7,843,818.66

Finding the Fourth Proportional to 13,728,406.80, 18,940,508.78 and 7,843,818.66

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Solution

The fourth proportional to 13,728,406.80, 18,940,508.78 and 7,843,818.66 is: 10,821,788.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728,406.80 : 18,940,508.78 = 7,843,818.66 : x
  2. Step 2: Convert to fraction form
    13,728,406.80/18,940,508.78 = 7,843,818.66/x
  3. Step 3: Cross multiply
    13,728,406.80x = 18,940,508.78 × 7,843,818.66
  4. Step 4: Simplify right side
    13,728,406.80x = 148,565,916,198,457.84
  5. Step 5: Solve for x
    x = 148,565,916,198,457.84/13,728,406.80
  6. Step 6: Final answer
    x = 10,821,788.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.