Home / 20,396.28-30,587.94-7,915.44

Finding the Fourth Proportional to 20,396.28, 30,587.94 and 7,915.44

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Solution

The fourth proportional to 20,396.28, 30,587.94 and 7,915.44 is: 11,870.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.28 : 30,587.94 = 7,915.44 : x
  2. Step 2: Convert to fraction form
    20,396.28/30,587.94 = 7,915.44/x
  3. Step 3: Cross multiply
    20,396.28x = 30,587.94 × 7,915.44
  4. Step 4: Simplify right side
    20,396.28x = 242,117,003.79
  5. Step 5: Solve for x
    x = 242,117,003.79/20,396.28
  6. Step 6: Final answer
    x = 11,870.65

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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.