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Finding the Fourth Proportional to 17,051.31, 23,530.80 and 9,979.08

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Solution

The fourth proportional to 17,051.31, 23,530.80 and 9,979.08 is: 13,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,051.31 : 23,530.80 = 9,979.08 : x
  2. Step 2: Convert to fraction form
    17,051.31/23,530.80 = 9,979.08/x
  3. Step 3: Cross multiply
    17,051.31x = 23,530.80 × 9,979.08
  4. Step 4: Simplify right side
    17,051.31x = 234,815,735.66
  5. Step 5: Solve for x
    x = 234,815,735.66/17,051.31
  6. Step 6: Final answer
    x = 13,771.13

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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.