Home / 20,367.74-28,106.97-11,869.31

Finding the Fourth Proportional to 20,367.74, 28,106.97 and 11,869.31

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Solution

The fourth proportional to 20,367.74, 28,106.97 and 11,869.31 is: 16,379.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,367.74 : 28,106.97 = 11,869.31 : x
  2. Step 2: Convert to fraction form
    20,367.74/28,106.97 = 11,869.31/x
  3. Step 3: Cross multiply
    20,367.74x = 28,106.97 × 11,869.31
  4. Step 4: Simplify right side
    20,367.74x = 333,610,199.56
  5. Step 5: Solve for x
    x = 333,610,199.56/20,367.74
  6. Step 6: Final answer
    x = 16,379.35

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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.