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Finding the Fourth Proportional to 23,920.40, 35,880.60 and 7,278.95

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Solution

The fourth proportional to 23,920.40, 35,880.60 and 7,278.95 is: 10,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,920.40 : 35,880.60 = 7,278.95 : x
  2. Step 2: Convert to fraction form
    23,920.40/35,880.60 = 7,278.95/x
  3. Step 3: Cross multiply
    23,920.40x = 35,880.60 × 7,278.95
  4. Step 4: Simplify right side
    23,920.40x = 261,173,093.37
  5. Step 5: Solve for x
    x = 261,173,093.37/23,920.40
  6. Step 6: Final answer
    x = 10,918.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.