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Finding the Fourth Proportional to 19,073.94, 28,618.74 and 8,394.78

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Solution

The fourth proportional to 19,073.94, 28,618.74 and 8,394.78 is: 12,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,073.94 : 28,618.74 = 8,394.78 : x
  2. Step 2: Convert to fraction form
    19,073.94/28,618.74 = 8,394.78/x
  3. Step 3: Cross multiply
    19,073.94x = 28,618.74 × 8,394.78
  4. Step 4: Simplify right side
    19,073.94x = 240,248,026.18
  5. Step 5: Solve for x
    x = 240,248,026.18/19,073.94
  6. Step 6: Final answer
    x = 12,595.62

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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.