Home / 13,915.26-20,859.69-5,144.22

Finding the Fourth Proportional to 13,915.26, 20,859.69 and 5,144.22

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Solution

The fourth proportional to 13,915.26, 20,859.69 and 5,144.22 is: 7,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.26 : 20,859.69 = 5,144.22 : x
  2. Step 2: Convert to fraction form
    13,915.26/20,859.69 = 5,144.22/x
  3. Step 3: Cross multiply
    13,915.26x = 20,859.69 × 5,144.22
  4. Step 4: Simplify right side
    13,915.26x = 107,306,834.49
  5. Step 5: Solve for x
    x = 107,306,834.49/13,915.26
  6. Step 6: Final answer
    x = 7,711.45

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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.