Home / 21,334,957.90-29,439,074.77-12,957,968.44

Finding the Fourth Proportional to 21,334,957.90, 29,439,074.77 and 12,957,968.44

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Solution

The fourth proportional to 21,334,957.90, 29,439,074.77 and 12,957,968.44 is: 17,880,072.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334,957.90 : 29,439,074.77 = 12,957,968.44 : x
  2. Step 2: Convert to fraction form
    21,334,957.90/29,439,074.77 = 12,957,968.44/x
  3. Step 3: Cross multiply
    21,334,957.90x = 29,439,074.77 × 12,957,968.44
  4. Step 4: Simplify right side
    21,334,957.90x = 381,470,601,832,062.44
  5. Step 5: Solve for x
    x = 381,470,601,832,062.44/21,334,957.90
  6. Step 6: Final answer
    x = 17,880,072.86

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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.