Home / 20,901.82-28,844.48-11,949.50

Finding the Fourth Proportional to 20,901.82, 28,844.48 and 11,949.50

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Solution

The fourth proportional to 20,901.82, 28,844.48 and 11,949.50 is: 16,490.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.82 : 28,844.48 = 11,949.50 : x
  2. Step 2: Convert to fraction form
    20,901.82/28,844.48 = 11,949.50/x
  3. Step 3: Cross multiply
    20,901.82x = 28,844.48 × 11,949.50
  4. Step 4: Simplify right side
    20,901.82x = 344,677,113.76
  5. Step 5: Solve for x
    x = 344,677,113.76/20,901.82
  6. Step 6: Final answer
    x = 16,490.29

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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.