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Finding the Fourth Proportional to 18,710.00, 28,065.41 and 4,669.86

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Solution

The fourth proportional to 18,710.00, 28,065.41 and 4,669.86 is: 7,004.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710.00 : 28,065.41 = 4,669.86 : x
  2. Step 2: Convert to fraction form
    18,710.00/28,065.41 = 4,669.86/x
  3. Step 3: Cross multiply
    18,710.00x = 28,065.41 × 4,669.86
  4. Step 4: Simplify right side
    18,710.00x = 131,061,634.95
  5. Step 5: Solve for x
    x = 131,061,634.95/18,710.00
  6. Step 6: Final answer
    x = 7,004.90

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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.