Home / 20,904.44-31,367.40-13,889.30

Finding the Fourth Proportional to 20,904.44, 31,367.40 and 13,889.30

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Solution

The fourth proportional to 20,904.44, 31,367.40 and 13,889.30 is: 20,841.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.44 : 31,367.40 = 13,889.30 : x
  2. Step 2: Convert to fraction form
    20,904.44/31,367.40 = 13,889.30/x
  3. Step 3: Cross multiply
    20,904.44x = 31,367.40 × 13,889.30
  4. Step 4: Simplify right side
    20,904.44x = 435,671,228.82
  5. Step 5: Solve for x
    x = 435,671,228.82/20,904.44
  6. Step 6: Final answer
    x = 20,841.09

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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.