Home / 12,468,021.60-18,713,842.20-7,685,052.60

Finding the Fourth Proportional to 12,468,021.60, 18,713,842.20 and 7,685,052.60

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Solution

The fourth proportional to 12,468,021.60, 18,713,842.20 and 7,685,052.60 is: 11,534,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,468,021.60 : 18,713,842.20 = 7,685,052.60 : x
  2. Step 2: Convert to fraction form
    12,468,021.60/18,713,842.20 = 7,685,052.60/x
  3. Step 3: Cross multiply
    12,468,021.60x = 18,713,842.20 × 7,685,052.60
  4. Step 4: Simplify right side
    12,468,021.60x = 143,816,861,655,099.72
  5. Step 5: Solve for x
    x = 143,816,861,655,099.72/12,468,021.60
  6. Step 6: Final answer
    x = 11,534,858.24

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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.