Home / 20,904.44-31,367.38-13,889.28

Finding the Fourth Proportional to 20,904.44, 31,367.38 and 13,889.28

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Solution

The fourth proportional to 20,904.44, 31,367.38 and 13,889.28 is: 20,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.44 : 31,367.38 = 13,889.28 : x
  2. Step 2: Convert to fraction form
    20,904.44/31,367.38 = 13,889.28/x
  3. Step 3: Cross multiply
    20,904.44x = 31,367.38 × 13,889.28
  4. Step 4: Simplify right side
    20,904.44x = 435,670,323.69
  5. Step 5: Solve for x
    x = 435,670,323.69/20,904.44
  6. Step 6: Final answer
    x = 20,841.04

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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.