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Finding the Fourth Proportional to 18,844.32, 28,270.80 and 5,696.64

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Solution

The fourth proportional to 18,844.32, 28,270.80 and 5,696.64 is: 8,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,844.32 : 28,270.80 = 5,696.64 : x
  2. Step 2: Convert to fraction form
    18,844.32/28,270.80 = 5,696.64/x
  3. Step 3: Cross multiply
    18,844.32x = 28,270.80 × 5,696.64
  4. Step 4: Simplify right side
    18,844.32x = 161,048,570.11
  5. Step 5: Solve for x
    x = 161,048,570.11/18,844.32
  6. Step 6: Final answer
    x = 8,546.27

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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.