Home / 13,915.70-20,882.81-5,150.39

Finding the Fourth Proportional to 13,915.70, 20,882.81 and 5,150.39

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Solution

The fourth proportional to 13,915.70, 20,882.81 and 5,150.39 is: 7,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.70 : 20,882.81 = 5,150.39 : x
  2. Step 2: Convert to fraction form
    13,915.70/20,882.81 = 5,150.39/x
  3. Step 3: Cross multiply
    13,915.70x = 20,882.81 × 5,150.39
  4. Step 4: Simplify right side
    13,915.70x = 107,554,524.26
  5. Step 5: Solve for x
    x = 107,554,524.26/13,915.70
  6. Step 6: Final answer
    x = 7,729.01

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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.