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Finding the Fourth Proportional to 21,100.01, 31,653.06 and 7,055.85

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Solution

The fourth proportional to 21,100.01, 31,653.06 and 7,055.85 is: 10,584.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.01 : 31,653.06 = 7,055.85 : x
  2. Step 2: Convert to fraction form
    21,100.01/31,653.06 = 7,055.85/x
  3. Step 3: Cross multiply
    21,100.01x = 31,653.06 × 7,055.85
  4. Step 4: Simplify right side
    21,100.01x = 223,339,243.40
  5. Step 5: Solve for x
    x = 223,339,243.40/21,100.01
  6. Step 6: Final answer
    x = 10,584.79

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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.