Home / 25,975.44-38,990.72-21,103.90

Finding the Fourth Proportional to 25,975.44, 38,990.72 and 21,103.90

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Solution

The fourth proportional to 25,975.44, 38,990.72 and 21,103.90 is: 31,678.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,975.44 : 38,990.72 = 21,103.90 : x
  2. Step 2: Convert to fraction form
    25,975.44/38,990.72 = 21,103.90/x
  3. Step 3: Cross multiply
    25,975.44x = 38,990.72 × 21,103.90
  4. Step 4: Simplify right side
    25,975.44x = 822,856,052.81
  5. Step 5: Solve for x
    x = 822,856,052.81/25,975.44
  6. Step 6: Final answer
    x = 31,678.23

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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.