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Finding the Fourth Proportional to 19,243.57, 28,842.94 and 8,146.57

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Solution

The fourth proportional to 19,243.57, 28,842.94 and 8,146.57 is: 12,210.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.57 : 28,842.94 = 8,146.57 : x
  2. Step 2: Convert to fraction form
    19,243.57/28,842.94 = 8,146.57/x
  3. Step 3: Cross multiply
    19,243.57x = 28,842.94 × 8,146.57
  4. Step 4: Simplify right side
    19,243.57x = 234,971,029.72
  5. Step 5: Solve for x
    x = 234,971,029.72/19,243.57
  6. Step 6: Final answer
    x = 12,210.37

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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.