Home / 12,894,087.20-19,345,892.40-5,321,709.60

Finding the Fourth Proportional to 12,894,087.20, 19,345,892.40 and 5,321,709.60

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Solution

The fourth proportional to 12,894,087.20, 19,345,892.40 and 5,321,709.60 is: 7,984,529.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,894,087.20 : 19,345,892.40 = 5,321,709.60 : x
  2. Step 2: Convert to fraction form
    12,894,087.20/19,345,892.40 = 5,321,709.60/x
  3. Step 3: Cross multiply
    12,894,087.20x = 19,345,892.40 × 5,321,709.60
  4. Step 4: Simplify right side
    12,894,087.20x = 102,953,221,305,647.03
  5. Step 5: Solve for x
    x = 102,953,221,305,647.03/12,894,087.20
  6. Step 6: Final answer
    x = 7,984,529.63

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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.