Home / 20,285.68-27,995.32-11,333.36

Finding the Fourth Proportional to 20,285.68, 27,995.32 and 11,333.36

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Solution

The fourth proportional to 20,285.68, 27,995.32 and 11,333.36 is: 15,640.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.68 : 27,995.32 = 11,333.36 : x
  2. Step 2: Convert to fraction form
    20,285.68/27,995.32 = 11,333.36/x
  3. Step 3: Cross multiply
    20,285.68x = 27,995.32 × 11,333.36
  4. Step 4: Simplify right side
    20,285.68x = 317,281,039.88
  5. Step 5: Solve for x
    x = 317,281,039.88/20,285.68
  6. Step 6: Final answer
    x = 15,640.64

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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.