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Finding the Fourth Proportional to 15,042.69, 20,751.93 and 9,739.26

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Solution

The fourth proportional to 15,042.69, 20,751.93 and 9,739.26 is: 13,435.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,042.69 : 20,751.93 = 9,739.26 : x
  2. Step 2: Convert to fraction form
    15,042.69/20,751.93 = 9,739.26/x
  3. Step 3: Cross multiply
    15,042.69x = 20,751.93 × 9,739.26
  4. Step 4: Simplify right side
    15,042.69x = 202,108,441.77
  5. Step 5: Solve for x
    x = 202,108,441.77/15,042.69
  6. Step 6: Final answer
    x = 13,435.66

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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.