Home / 21,978,135.64-30,329,827.17-12,190,078.63

Finding the Fourth Proportional to 21,978,135.64, 30,329,827.17 and 12,190,078.63

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Solution

The fourth proportional to 21,978,135.64, 30,329,827.17 and 12,190,078.63 is: 16,822,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,135.64 : 30,329,827.17 = 12,190,078.63 : x
  2. Step 2: Convert to fraction form
    21,978,135.64/30,329,827.17 = 12,190,078.63/x
  3. Step 3: Cross multiply
    21,978,135.64x = 30,329,827.17 × 12,190,078.63
  4. Step 4: Simplify right side
    21,978,135.64x = 369,722,978,036,610.44
  5. Step 5: Solve for x
    x = 369,722,978,036,610.44/21,978,135.64
  6. Step 6: Final answer
    x = 16,822,308.50

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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.