Home / 20,650.82-28,498.23-11,219.38

Finding the Fourth Proportional to 20,650.82, 28,498.23 and 11,219.38

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Solution

The fourth proportional to 20,650.82, 28,498.23 and 11,219.38 is: 15,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.82 : 28,498.23 = 11,219.38 : x
  2. Step 2: Convert to fraction form
    20,650.82/28,498.23 = 11,219.38/x
  3. Step 3: Cross multiply
    20,650.82x = 28,498.23 × 11,219.38
  4. Step 4: Simplify right side
    20,650.82x = 319,732,400.45
  5. Step 5: Solve for x
    x = 319,732,400.45/20,650.82
  6. Step 6: Final answer
    x = 15,482.80

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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.