Home / 20,980,730.66-28,945,727.97-12,714,829.94

Finding the Fourth Proportional to 20,980,730.66, 28,945,727.97 and 12,714,829.94

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Solution

The fourth proportional to 20,980,730.66, 28,945,727.97 and 12,714,829.94 is: 17,541,810.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980,730.66 : 28,945,727.97 = 12,714,829.94 : x
  2. Step 2: Convert to fraction form
    20,980,730.66/28,945,727.97 = 12,714,829.94/x
  3. Step 3: Cross multiply
    20,980,730.66x = 28,945,727.97 × 12,714,829.94
  4. Step 4: Simplify right side
    20,980,730.66x = 368,040,008,628,051.38
  5. Step 5: Solve for x
    x = 368,040,008,628,051.38/20,980,730.66
  6. Step 6: Final answer
    x = 17,541,810.85

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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.