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Finding the Fourth Proportional to 15,621.70, 23,419.70 and 7,297.60

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Solution

The fourth proportional to 15,621.70, 23,419.70 and 7,297.60 is: 10,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.70 : 23,419.70 = 7,297.60 : x
  2. Step 2: Convert to fraction form
    15,621.70/23,419.70 = 7,297.60/x
  3. Step 3: Cross multiply
    15,621.70x = 23,419.70 × 7,297.60
  4. Step 4: Simplify right side
    15,621.70x = 170,907,602.72
  5. Step 5: Solve for x
    x = 170,907,602.72/15,621.70
  6. Step 6: Final answer
    x = 10,940.40

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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.