Home / 25,388.96-35,003.20-20,835.04

Finding the Fourth Proportional to 25,388.96, 35,003.20 and 20,835.04

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Solution

The fourth proportional to 25,388.96, 35,003.20 and 20,835.04 is: 28,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,388.96 : 35,003.20 = 20,835.04 : x
  2. Step 2: Convert to fraction form
    25,388.96/35,003.20 = 20,835.04/x
  3. Step 3: Cross multiply
    25,388.96x = 35,003.20 × 20,835.04
  4. Step 4: Simplify right side
    25,388.96x = 729,293,072.13
  5. Step 5: Solve for x
    x = 729,293,072.13/25,388.96
  6. Step 6: Final answer
    x = 28,724.81

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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.