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Finding the Fourth Proportional to 18,730.89, 28,093.50 and 7,041.38

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Solution

The fourth proportional to 18,730.89, 28,093.50 and 7,041.38 is: 10,561.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.89 : 28,093.50 = 7,041.38 : x
  2. Step 2: Convert to fraction form
    18,730.89/28,093.50 = 7,041.38/x
  3. Step 3: Cross multiply
    18,730.89x = 28,093.50 × 7,041.38
  4. Step 4: Simplify right side
    18,730.89x = 197,816,868.56
  5. Step 5: Solve for x
    x = 197,816,868.56/18,730.89
  6. Step 6: Final answer
    x = 10,561.00

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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.