Home / 20,947.88-28,906.54-11,995.16

Finding the Fourth Proportional to 20,947.88, 28,906.54 and 11,995.16

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Solution

The fourth proportional to 20,947.88, 28,906.54 and 11,995.16 is: 16,552.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.88 : 28,906.54 = 11,995.16 : x
  2. Step 2: Convert to fraction form
    20,947.88/28,906.54 = 11,995.16/x
  3. Step 3: Cross multiply
    20,947.88x = 28,906.54 × 11,995.16
  4. Step 4: Simplify right side
    20,947.88x = 346,738,397.83
  5. Step 5: Solve for x
    x = 346,738,397.83/20,947.88
  6. Step 6: Final answer
    x = 16,552.43

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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.