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Finding the Fourth Proportional to 15,201,678.24, 20,978,724.06 and 8,585,735.94

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Solution

The fourth proportional to 15,201,678.24, 20,978,724.06 and 8,585,735.94 is: 11,848,546.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,201,678.24 : 20,978,724.06 = 8,585,735.94 : x
  2. Step 2: Convert to fraction form
    15,201,678.24/20,978,724.06 = 8,585,735.94/x
  3. Step 3: Cross multiply
    15,201,678.24x = 20,978,724.06 × 8,585,735.94
  4. Step 4: Simplify right side
    15,201,678.24x = 180,117,785,137,284.69
  5. Step 5: Solve for x
    x = 180,117,785,137,284.69/15,201,678.24
  6. Step 6: Final answer
    x = 11,848,546.08

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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.