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Finding the Fourth Proportional to 15,755.00, 21,741.69 and 8,681.27

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Solution

The fourth proportional to 15,755.00, 21,741.69 and 8,681.27 is: 11,980.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.00 : 21,741.69 = 8,681.27 : x
  2. Step 2: Convert to fraction form
    15,755.00/21,741.69 = 8,681.27/x
  3. Step 3: Cross multiply
    15,755.00x = 21,741.69 × 8,681.27
  4. Step 4: Simplify right side
    15,755.00x = 188,745,372.44
  5. Step 5: Solve for x
    x = 188,745,372.44/15,755.00
  6. Step 6: Final answer
    x = 11,980.03

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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.