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Finding the Fourth Proportional to 11,806.79, 16,290.99 and 8,973.41

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Solution

The fourth proportional to 11,806.79, 16,290.99 and 8,973.41 is: 12,381.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,806.79 : 16,290.99 = 8,973.41 : x
  2. Step 2: Convert to fraction form
    11,806.79/16,290.99 = 8,973.41/x
  3. Step 3: Cross multiply
    11,806.79x = 16,290.99 × 8,973.41
  4. Step 4: Simplify right side
    11,806.79x = 146,185,651.12
  5. Step 5: Solve for x
    x = 146,185,651.12/11,806.79
  6. Step 6: Final answer
    x = 12,381.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.