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Finding the Fourth Proportional to 14,268.88, 19,691.48 and 7,808.91

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Solution

The fourth proportional to 14,268.88, 19,691.48 and 7,808.91 is: 10,776.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.88 : 19,691.48 = 7,808.91 : x
  2. Step 2: Convert to fraction form
    14,268.88/19,691.48 = 7,808.91/x
  3. Step 3: Cross multiply
    14,268.88x = 19,691.48 × 7,808.91
  4. Step 4: Simplify right side
    14,268.88x = 153,768,995.09
  5. Step 5: Solve for x
    x = 153,768,995.09/14,268.88
  6. Step 6: Final answer
    x = 10,776.53

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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.