Home / 13,999.32-20,999.52-3,611.07

Finding the Fourth Proportional to 13,999.32, 20,999.52 and 3,611.07

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Solution

The fourth proportional to 13,999.32, 20,999.52 and 3,611.07 is: 5,416.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.32 : 20,999.52 = 3,611.07 : x
  2. Step 2: Convert to fraction form
    13,999.32/20,999.52 = 3,611.07/x
  3. Step 3: Cross multiply
    13,999.32x = 20,999.52 × 3,611.07
  4. Step 4: Simplify right side
    13,999.32x = 75,830,736.69
  5. Step 5: Solve for x
    x = 75,830,736.69/13,999.32
  6. Step 6: Final answer
    x = 5,416.74

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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.