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Finding the Fourth Proportional to 14,978,118.86, 20,669,603.09 and 8,362,808.93

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Solution

The fourth proportional to 14,978,118.86, 20,669,603.09 and 8,362,808.93 is: 11,540,564.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,978,118.86 : 20,669,603.09 = 8,362,808.93 : x
  2. Step 2: Convert to fraction form
    14,978,118.86/20,669,603.09 = 8,362,808.93/x
  3. Step 3: Cross multiply
    14,978,118.86x = 20,669,603.09 × 8,362,808.93
  4. Step 4: Simplify right side
    14,978,118.86x = 172,855,941,252,336.38
  5. Step 5: Solve for x
    x = 172,855,941,252,336.38/14,978,118.86
  6. Step 6: Final answer
    x = 11,540,564.13

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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.