Home / 20,999.07-28,977.21-12,046.34

Finding the Fourth Proportional to 20,999.07, 28,977.21 and 12,046.34

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Solution

The fourth proportional to 20,999.07, 28,977.21 and 12,046.34 is: 16,623.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.07 : 28,977.21 = 12,046.34 : x
  2. Step 2: Convert to fraction form
    20,999.07/28,977.21 = 12,046.34/x
  3. Step 3: Cross multiply
    20,999.07x = 28,977.21 × 12,046.34
  4. Step 4: Simplify right side
    20,999.07x = 349,069,396.35
  5. Step 5: Solve for x
    x = 349,069,396.35/20,999.07
  6. Step 6: Final answer
    x = 16,623.09

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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.