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Finding the Fourth Proportional to 19,312.62, 28,974.77 and 8,073.42

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Solution

The fourth proportional to 19,312.62, 28,974.77 and 8,073.42 is: 12,112.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,312.62 : 28,974.77 = 8,073.42 : x
  2. Step 2: Convert to fraction form
    19,312.62/28,974.77 = 8,073.42/x
  3. Step 3: Cross multiply
    19,312.62x = 28,974.77 × 8,073.42
  4. Step 4: Simplify right side
    19,312.62x = 233,925,447.25
  5. Step 5: Solve for x
    x = 233,925,447.25/19,312.62
  6. Step 6: Final answer
    x = 12,112.57

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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.