Home / 19,021.55-28,539.08-8,490.61

Finding the Fourth Proportional to 19,021.55, 28,539.08 and 8,490.61

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Solution

The fourth proportional to 19,021.55, 28,539.08 and 8,490.61 is: 12,738.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.55 : 28,539.08 = 8,490.61 : x
  2. Step 2: Convert to fraction form
    19,021.55/28,539.08 = 8,490.61/x
  3. Step 3: Cross multiply
    19,021.55x = 28,539.08 × 8,490.61
  4. Step 4: Simplify right side
    19,021.55x = 242,314,198.04
  5. Step 5: Solve for x
    x = 242,314,198.04/19,021.55
  6. Step 6: Final answer
    x = 12,738.93

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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.