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Finding the Fourth Proportional to 19,239.93, 28,862.91 and 8,146.71

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Solution

The fourth proportional to 19,239.93, 28,862.91 and 8,146.71 is: 12,221.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,239.93 : 28,862.91 = 8,146.71 : x
  2. Step 2: Convert to fraction form
    19,239.93/28,862.91 = 8,146.71/x
  3. Step 3: Cross multiply
    19,239.93x = 28,862.91 × 8,146.71
  4. Step 4: Simplify right side
    19,239.93x = 235,137,757.53
  5. Step 5: Solve for x
    x = 235,137,757.53/19,239.93
  6. Step 6: Final answer
    x = 12,221.34

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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.