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Finding the Fourth Proportional to 11,828.58, 16,330.08 and 7,855.08

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Solution

The fourth proportional to 11,828.58, 16,330.08 and 7,855.08 is: 10,844.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,828.58 : 16,330.08 = 7,855.08 : x
  2. Step 2: Convert to fraction form
    11,828.58/16,330.08 = 7,855.08/x
  3. Step 3: Cross multiply
    11,828.58x = 16,330.08 × 7,855.08
  4. Step 4: Simplify right side
    11,828.58x = 128,274,084.81
  5. Step 5: Solve for x
    x = 128,274,084.81/11,828.58
  6. Step 6: Final answer
    x = 10,844.42

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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.