Home / 13,915.75-20,874.84-3,527.50

Finding the Fourth Proportional to 13,915.75, 20,874.84 and 3,527.50

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Solution

The fourth proportional to 13,915.75, 20,874.84 and 3,527.50 is: 5,291.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.75 : 20,874.84 = 3,527.50 : x
  2. Step 2: Convert to fraction form
    13,915.75/20,874.84 = 3,527.50/x
  3. Step 3: Cross multiply
    13,915.75x = 20,874.84 × 3,527.50
  4. Step 4: Simplify right side
    13,915.75x = 73,635,998.10
  5. Step 5: Solve for x
    x = 73,635,998.10/13,915.75
  6. Step 6: Final answer
    x = 5,291.56

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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.