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Finding the Fourth Proportional to 13,106.76, 18,093.52 and 8,393.76

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Solution

The fourth proportional to 13,106.76, 18,093.52 and 8,393.76 is: 11,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.76 : 18,093.52 = 8,393.76 : x
  2. Step 2: Convert to fraction form
    13,106.76/18,093.52 = 8,393.76/x
  3. Step 3: Cross multiply
    13,106.76x = 18,093.52 × 8,393.76
  4. Step 4: Simplify right side
    13,106.76x = 151,872,664.44
  5. Step 5: Solve for x
    x = 151,872,664.44/13,106.76
  6. Step 6: Final answer
    x = 11,587.35

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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.