Home / 13,101,871.88-18,081,928.56-7,876,571.60

Finding the Fourth Proportional to 13,101,871.88, 18,081,928.56 and 7,876,571.60

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Solution

The fourth proportional to 13,101,871.88, 18,081,928.56 and 7,876,571.60 is: 10,870,477.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101,871.88 : 18,081,928.56 = 7,876,571.60 : x
  2. Step 2: Convert to fraction form
    13,101,871.88/18,081,928.56 = 7,876,571.60/x
  3. Step 3: Cross multiply
    13,101,871.88x = 18,081,928.56 × 7,876,571.60
  4. Step 4: Simplify right side
    13,101,871.88x = 142,423,604,968,924.88
  5. Step 5: Solve for x
    x = 142,423,604,968,924.88/13,101,871.88
  6. Step 6: Final answer
    x = 10,870,477.61

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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.