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Finding the Fourth Proportional to 18,736,561.80, 28,104,842.70 and 11,524,710.60

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Solution

The fourth proportional to 18,736,561.80, 28,104,842.70 and 11,524,710.60 is: 17,287,065.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736,561.80 : 28,104,842.70 = 11,524,710.60 : x
  2. Step 2: Convert to fraction form
    18,736,561.80/28,104,842.70 = 11,524,710.60/x
  3. Step 3: Cross multiply
    18,736,561.80x = 28,104,842.70 × 11,524,710.60
  4. Step 4: Simplify right side
    18,736,561.80x = 323,900,178,576,022.62
  5. Step 5: Solve for x
    x = 323,900,178,576,022.62/18,736,561.80
  6. Step 6: Final answer
    x = 17,287,065.90

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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.