Home / 20,914.74-28,819.80-19,438.38

Finding the Fourth Proportional to 20,914.74, 28,819.80 and 19,438.38

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Solution

The fourth proportional to 20,914.74, 28,819.80 and 19,438.38 is: 26,785.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.74 : 28,819.80 = 19,438.38 : x
  2. Step 2: Convert to fraction form
    20,914.74/28,819.80 = 19,438.38/x
  3. Step 3: Cross multiply
    20,914.74x = 28,819.80 × 19,438.38
  4. Step 4: Simplify right side
    20,914.74x = 560,210,223.92
  5. Step 5: Solve for x
    x = 560,210,223.92/20,914.74
  6. Step 6: Final answer
    x = 26,785.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.