Home / 20,968.65-28,936.10-11,537.19

Finding the Fourth Proportional to 20,968.65, 28,936.10 and 11,537.19

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Solution

The fourth proportional to 20,968.65, 28,936.10 and 11,537.19 is: 15,920.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.65 : 28,936.10 = 11,537.19 : x
  2. Step 2: Convert to fraction form
    20,968.65/28,936.10 = 11,537.19/x
  3. Step 3: Cross multiply
    20,968.65x = 28,936.10 × 11,537.19
  4. Step 4: Simplify right side
    20,968.65x = 333,841,312.40
  5. Step 5: Solve for x
    x = 333,841,312.40/20,968.65
  6. Step 6: Final answer
    x = 15,920.97

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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.