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Finding the Fourth Proportional to 15,804.87, 21,811.22 and 9,092.15

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Solution

The fourth proportional to 15,804.87, 21,811.22 and 9,092.15 is: 12,547.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.87 : 21,811.22 = 9,092.15 : x
  2. Step 2: Convert to fraction form
    15,804.87/21,811.22 = 9,092.15/x
  3. Step 3: Cross multiply
    15,804.87x = 21,811.22 × 9,092.15
  4. Step 4: Simplify right side
    15,804.87x = 198,310,896.44
  5. Step 5: Solve for x
    x = 198,310,896.44/15,804.87
  6. Step 6: Final answer
    x = 12,547.45

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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.