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Finding the Fourth Proportional to 15,805.52, 21,804.84 and 11,092.88

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Solution

The fourth proportional to 15,805.52, 21,804.84 and 11,092.88 is: 15,303.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,805.52 : 21,804.84 = 11,092.88 : x
  2. Step 2: Convert to fraction form
    15,805.52/21,804.84 = 11,092.88/x
  3. Step 3: Cross multiply
    15,805.52x = 21,804.84 × 11,092.88
  4. Step 4: Simplify right side
    15,805.52x = 241,878,473.54
  5. Step 5: Solve for x
    x = 241,878,473.54/15,805.52
  6. Step 6: Final answer
    x = 15,303.42

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1.5x scale

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.