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Finding the Fourth Proportional to 18,732,648.80, 28,119,968.40 and 14,491,618.40

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Solution

The fourth proportional to 18,732,648.80, 28,119,968.40 and 14,491,618.40 is: 21,753,669.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,732,648.80 : 28,119,968.40 = 14,491,618.40 : x
  2. Step 2: Convert to fraction form
    18,732,648.80/28,119,968.40 = 14,491,618.40/x
  3. Step 3: Cross multiply
    18,732,648.80x = 28,119,968.40 × 14,491,618.40
  4. Step 4: Simplify right side
    18,732,648.80x = 407,503,851,472,858.56
  5. Step 5: Solve for x
    x = 407,503,851,472,858.56/18,732,648.80
  6. Step 6: Final answer
    x = 21,753,669.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.