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Finding the Fourth Proportional to 17,005.19, 25,481.79 and 7,139.07

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Solution

The fourth proportional to 17,005.19, 25,481.79 and 7,139.07 is: 10,697.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,005.19 : 25,481.79 = 7,139.07 : x
  2. Step 2: Convert to fraction form
    17,005.19/25,481.79 = 7,139.07/x
  3. Step 3: Cross multiply
    17,005.19x = 25,481.79 × 7,139.07
  4. Step 4: Simplify right side
    17,005.19x = 181,916,282.54
  5. Step 5: Solve for x
    x = 181,916,282.54/17,005.19
  6. Step 6: Final answer
    x = 10,697.69

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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.