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Finding the Fourth Proportional to 21,879,968.40, 32,772,713.40 and 18,100,832.40

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Solution

The fourth proportional to 21,879,968.40, 32,772,713.40 and 18,100,832.40 is: 27,112,168.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,879,968.40 : 32,772,713.40 = 18,100,832.40 : x
  2. Step 2: Convert to fraction form
    21,879,968.40/32,772,713.40 = 18,100,832.40/x
  3. Step 3: Cross multiply
    21,879,968.40x = 32,772,713.40 × 18,100,832.40
  4. Step 4: Simplify right side
    21,879,968.40x = 593,213,392,546,634.12
  5. Step 5: Solve for x
    x = 593,213,392,546,634.12/21,879,968.40
  6. Step 6: Final answer
    x = 27,112,168.61

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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.