Home / 20,968.63-28,937.31-11,537.80

Finding the Fourth Proportional to 20,968.63, 28,937.31 and 11,537.80

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Solution

The fourth proportional to 20,968.63, 28,937.31 and 11,537.80 is: 15,922.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.63 : 28,937.31 = 11,537.80 : x
  2. Step 2: Convert to fraction form
    20,968.63/28,937.31 = 11,537.80/x
  3. Step 3: Cross multiply
    20,968.63x = 28,937.31 × 11,537.80
  4. Step 4: Simplify right side
    20,968.63x = 333,872,895.32
  5. Step 5: Solve for x
    x = 333,872,895.32/20,968.63
  6. Step 6: Final answer
    x = 15,922.49

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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.