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Finding the Fourth Proportional to 18,883.64, 28,326.41 and 7,197.77

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Solution

The fourth proportional to 18,883.64, 28,326.41 and 7,197.77 is: 10,797.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.64 : 28,326.41 = 7,197.77 : x
  2. Step 2: Convert to fraction form
    18,883.64/28,326.41 = 7,197.77/x
  3. Step 3: Cross multiply
    18,883.64x = 28,326.41 × 7,197.77
  4. Step 4: Simplify right side
    18,883.64x = 203,886,984.11
  5. Step 5: Solve for x
    x = 203,886,984.11/18,883.64
  6. Step 6: Final answer
    x = 10,797.02

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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.