Home / 20,243.52-30,519.43-18,816.51

Finding the Fourth Proportional to 20,243.52, 30,519.43 and 18,816.51

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Solution

The fourth proportional to 20,243.52, 30,519.43 and 18,816.51 is: 28,368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.52 : 30,519.43 = 18,816.51 : x
  2. Step 2: Convert to fraction form
    20,243.52/30,519.43 = 18,816.51/x
  3. Step 3: Cross multiply
    20,243.52x = 30,519.43 × 18,816.51
  4. Step 4: Simplify right side
    20,243.52x = 574,269,007.19
  5. Step 5: Solve for x
    x = 574,269,007.19/20,243.52
  6. Step 6: Final answer
    x = 28,368.04

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.