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Finding the Fourth Proportional to 18,884.34, 28,326.50 and 8,993.63

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Solution

The fourth proportional to 18,884.34, 28,326.50 and 8,993.63 is: 13,490.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,884.34 : 28,326.50 = 8,993.63 : x
  2. Step 2: Convert to fraction form
    18,884.34/28,326.50 = 8,993.63/x
  3. Step 3: Cross multiply
    18,884.34x = 28,326.50 × 8,993.63
  4. Step 4: Simplify right side
    18,884.34x = 254,758,060.20
  5. Step 5: Solve for x
    x = 254,758,060.20/18,884.34
  6. Step 6: Final answer
    x = 13,490.44

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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.