Home / 20,377.83-28,120.00-11,302.34

Finding the Fourth Proportional to 20,377.83, 28,120.00 and 11,302.34

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Solution

The fourth proportional to 20,377.83, 28,120.00 and 11,302.34 is: 15,596.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.83 : 28,120.00 = 11,302.34 : x
  2. Step 2: Convert to fraction form
    20,377.83/28,120.00 = 11,302.34/x
  3. Step 3: Cross multiply
    20,377.83x = 28,120.00 × 11,302.34
  4. Step 4: Simplify right side
    20,377.83x = 317,821,603.69
  5. Step 5: Solve for x
    x = 317,821,603.69/20,377.83
  6. Step 6: Final answer
    x = 15,596.44

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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.