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Finding the Fourth Proportional to 14,978,992.66, 20,670,959.49 and 8,103,476.54

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Solution

The fourth proportional to 14,978,992.66, 20,670,959.49 and 8,103,476.54 is: 11,182,770.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,978,992.66 : 20,670,959.49 = 8,103,476.54 : x
  2. Step 2: Convert to fraction form
    14,978,992.66/20,670,959.49 = 8,103,476.54/x
  3. Step 3: Cross multiply
    14,978,992.66x = 20,670,959.49 × 8,103,476.54
  4. Step 4: Simplify right side
    14,978,992.66x = 167,506,635,286,505.34
  5. Step 5: Solve for x
    x = 167,506,635,286,505.34/14,978,992.66
  6. Step 6: Final answer
    x = 11,182,770.37

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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.