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Finding the Fourth Proportional to 18,983.27, 28,477.73 and 7,135.28

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Solution

The fourth proportional to 18,983.27, 28,477.73 and 7,135.28 is: 10,703.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.27 : 28,477.73 = 7,135.28 : x
  2. Step 2: Convert to fraction form
    18,983.27/28,477.73 = 7,135.28/x
  3. Step 3: Cross multiply
    18,983.27x = 28,477.73 × 7,135.28
  4. Step 4: Simplify right side
    18,983.27x = 203,196,577.31
  5. Step 5: Solve for x
    x = 203,196,577.31/18,983.27
  6. Step 6: Final answer
    x = 10,703.98

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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.