Home / 20,736.77-28,616.91-11,305.40

Finding the Fourth Proportional to 20,736.77, 28,616.91 and 11,305.40

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Solution

The fourth proportional to 20,736.77, 28,616.91 and 11,305.40 is: 15,601.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.77 : 28,616.91 = 11,305.40 : x
  2. Step 2: Convert to fraction form
    20,736.77/28,616.91 = 11,305.40/x
  3. Step 3: Cross multiply
    20,736.77x = 28,616.91 × 11,305.40
  4. Step 4: Simplify right side
    20,736.77x = 323,525,614.31
  5. Step 5: Solve for x
    x = 323,525,614.31/20,736.77
  6. Step 6: Final answer
    x = 15,601.54

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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.