Home / 20,120.58-30,210.48-11,253.28

Finding the Fourth Proportional to 20,120.58, 30,210.48 and 11,253.28

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Solution

The fourth proportional to 20,120.58, 30,210.48 and 11,253.28 is: 16,896.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.58 : 30,210.48 = 11,253.28 : x
  2. Step 2: Convert to fraction form
    20,120.58/30,210.48 = 11,253.28/x
  3. Step 3: Cross multiply
    20,120.58x = 30,210.48 × 11,253.28
  4. Step 4: Simplify right side
    20,120.58x = 339,966,942.98
  5. Step 5: Solve for x
    x = 339,966,942.98/20,120.58
  6. Step 6: Final answer
    x = 16,896.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.