Home / 20,736.81-28,616.90-11,305.37

Finding the Fourth Proportional to 20,736.81, 28,616.90 and 11,305.37

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Solution

The fourth proportional to 20,736.81, 28,616.90 and 11,305.37 is: 15,601.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.81 : 28,616.90 = 11,305.37 : x
  2. Step 2: Convert to fraction form
    20,736.81/28,616.90 = 11,305.37/x
  3. Step 3: Cross multiply
    20,736.81x = 28,616.90 × 11,305.37
  4. Step 4: Simplify right side
    20,736.81x = 323,524,657.77
  5. Step 5: Solve for x
    x = 323,524,657.77/20,736.81
  6. Step 6: Final answer
    x = 15,601.47

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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.