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Finding the Fourth Proportional to 18,759.04, 28,140.48 and 8,230

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Solution

The fourth proportional to 18,759.04, 28,140.48 and 8,230 is: 12,345.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.04 : 28,140.48 = 8,230 : x
  2. Step 2: Convert to fraction form
    18,759.04/28,140.48 = 8,230/x
  3. Step 3: Cross multiply
    18,759.04x = 28,140.48 × 8,230
  4. Step 4: Simplify right side
    18,759.04x = 231,596,150.40
  5. Step 5: Solve for x
    x = 231,596,150.40/18,759.04
  6. Step 6: Final answer
    x = 12,345.84

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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.