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Finding the Fourth Proportional to 15,194.84, 20,969.04 and 8,907.32

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Solution

The fourth proportional to 15,194.84, 20,969.04 and 8,907.32 is: 12,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.84 : 20,969.04 = 8,907.32 : x
  2. Step 2: Convert to fraction form
    15,194.84/20,969.04 = 8,907.32/x
  3. Step 3: Cross multiply
    15,194.84x = 20,969.04 × 8,907.32
  4. Step 4: Simplify right side
    15,194.84x = 186,777,949.37
  5. Step 5: Solve for x
    x = 186,777,949.37/15,194.84
  6. Step 6: Final answer
    x = 12,292.20

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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.