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Finding the Fourth Proportional to 12,056.76, 18,085.11 and 7,922.91

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Solution

The fourth proportional to 12,056.76, 18,085.11 and 7,922.91 is: 11,884.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,056.76 : 18,085.11 = 7,922.91 : x
  2. Step 2: Convert to fraction form
    12,056.76/18,085.11 = 7,922.91/x
  3. Step 3: Cross multiply
    12,056.76x = 18,085.11 × 7,922.91
  4. Step 4: Simplify right side
    12,056.76x = 143,286,698.87
  5. Step 5: Solve for x
    x = 143,286,698.87/12,056.76
  6. Step 6: Final answer
    x = 11,884.35

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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.