Home / 25,653.96-35,381.54-21,550.12

Finding the Fourth Proportional to 25,653.96, 35,381.54 and 21,550.12

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Solution

The fourth proportional to 25,653.96, 35,381.54 and 21,550.12 is: 29,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,653.96 : 35,381.54 = 21,550.12 : x
  2. Step 2: Convert to fraction form
    25,653.96/35,381.54 = 21,550.12/x
  3. Step 3: Cross multiply
    25,653.96x = 35,381.54 × 21,550.12
  4. Step 4: Simplify right side
    25,653.96x = 762,476,432.78
  5. Step 5: Solve for x
    x = 762,476,432.78/25,653.96
  6. Step 6: Final answer
    x = 29,721.59

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Double scale
Find fourth proportional to 25,654.96, 35,382.92 and 21,551.12
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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.