Home / 21,540,690.63-29,722,087.54-12,839,672.85

Finding the Fourth Proportional to 21,540,690.63, 29,722,087.54 and 12,839,672.85

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Solution

The fourth proportional to 21,540,690.63, 29,722,087.54 and 12,839,672.85 is: 17,716,325.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540,690.63 : 29,722,087.54 = 12,839,672.85 : x
  2. Step 2: Convert to fraction form
    21,540,690.63/29,722,087.54 = 12,839,672.85/x
  3. Step 3: Cross multiply
    21,540,690.63x = 29,722,087.54 × 12,839,672.85
  4. Step 4: Simplify right side
    21,540,690.63x = 381,621,880,474,867.31
  5. Step 5: Solve for x
    x = 381,621,880,474,867.31/21,540,690.63
  6. Step 6: Final answer
    x = 17,716,325.22

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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.