Home / 13,689,189.82-18,889,770.57-8,181,468.16

Finding the Fourth Proportional to 13,689,189.82, 18,889,770.57 and 8,181,468.16

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Solution

The fourth proportional to 13,689,189.82, 18,889,770.57 and 8,181,468.16 is: 11,289,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689,189.82 : 18,889,770.57 = 8,181,468.16 : x
  2. Step 2: Convert to fraction form
    13,689,189.82/18,889,770.57 = 8,181,468.16/x
  3. Step 3: Cross multiply
    13,689,189.82x = 18,889,770.57 × 8,181,468.16
  4. Step 4: Simplify right side
    13,689,189.82x = 154,546,056,468,160.06
  5. Step 5: Solve for x
    x = 154,546,056,468,160.06/13,689,189.82
  6. Step 6: Final answer
    x = 11,289,642.30

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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.