Home / 13,081,745.91-18,052,809.39-7,281,897.78

Finding the Fourth Proportional to 13,081,745.91, 18,052,809.39 and 7,281,897.78

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Solution

The fourth proportional to 13,081,745.91, 18,052,809.39 and 7,281,897.78 is: 10,049,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081,745.91 : 18,052,809.39 = 7,281,897.78 : x
  2. Step 2: Convert to fraction form
    13,081,745.91/18,052,809.39 = 7,281,897.78/x
  3. Step 3: Cross multiply
    13,081,745.91x = 18,052,809.39 × 7,281,897.78
  4. Step 4: Simplify right side
    13,081,745.91x = 131,458,712,619,804.16
  5. Step 5: Solve for x
    x = 131,458,712,619,804.16/13,081,745.91
  6. Step 6: Final answer
    x = 10,049,018.96

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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.