Home / 13,915.06-20,879.44-6,518.24

Finding the Fourth Proportional to 13,915.06, 20,879.44 and 6,518.24

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Solution

The fourth proportional to 13,915.06, 20,879.44 and 6,518.24 is: 9,780.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.06 : 20,879.44 = 6,518.24 : x
  2. Step 2: Convert to fraction form
    13,915.06/20,879.44 = 6,518.24/x
  3. Step 3: Cross multiply
    13,915.06x = 20,879.44 × 6,518.24
  4. Step 4: Simplify right side
    13,915.06x = 136,097,200.99
  5. Step 5: Solve for x
    x = 136,097,200.99/13,915.06
  6. Step 6: Final answer
    x = 9,780.57

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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.