Home / 25,980.82-38,998.79-21,109.26

Finding the Fourth Proportional to 25,980.82, 38,998.79 and 21,109.26

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Solution

The fourth proportional to 25,980.82, 38,998.79 and 21,109.26 is: 31,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,980.82 : 38,998.79 = 21,109.26 : x
  2. Step 2: Convert to fraction form
    25,980.82/38,998.79 = 21,109.26/x
  3. Step 3: Cross multiply
    25,980.82x = 38,998.79 × 21,109.26
  4. Step 4: Simplify right side
    25,980.82x = 823,235,597.80
  5. Step 5: Solve for x
    x = 823,235,597.80/25,980.82
  6. Step 6: Final answer
    x = 31,686.28

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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.