Home / 21,368,728.40-29,485,583.69-12,072,906.63

Finding the Fourth Proportional to 21,368,728.40, 29,485,583.69 and 12,072,906.63

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Solution

The fourth proportional to 21,368,728.40, 29,485,583.69 and 12,072,906.63 is: 16,658,768.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368,728.40 : 29,485,583.69 = 12,072,906.63 : x
  2. Step 2: Convert to fraction form
    21,368,728.40/29,485,583.69 = 12,072,906.63/x
  3. Step 3: Cross multiply
    21,368,728.40x = 29,485,583.69 × 12,072,906.63
  4. Step 4: Simplify right side
    21,368,728.40x = 355,976,698,760,056.31
  5. Step 5: Solve for x
    x = 355,976,698,760,056.31/21,368,728.40
  6. Step 6: Final answer
    x = 16,658,768.47

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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.