Home / 25,381.14-35,004.31-20,657.22

Finding the Fourth Proportional to 25,381.14, 35,004.31 and 20,657.22

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Solution

The fourth proportional to 25,381.14, 35,004.31 and 20,657.22 is: 28,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,381.14 : 35,004.31 = 20,657.22 : x
  2. Step 2: Convert to fraction form
    25,381.14/35,004.31 = 20,657.22/x
  3. Step 3: Cross multiply
    25,381.14x = 35,004.31 × 20,657.22
  4. Step 4: Simplify right side
    25,381.14x = 723,091,732.62
  5. Step 5: Solve for x
    x = 723,091,732.62/25,381.14
  6. Step 6: Final answer
    x = 28,489.33

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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.