Home / 19,121.13-28,676.43-13,558.05

Finding the Fourth Proportional to 19,121.13, 28,676.43 and 13,558.05

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Solution

The fourth proportional to 19,121.13, 28,676.43 and 13,558.05 is: 20,333.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,121.13 : 28,676.43 = 13,558.05 : x
  2. Step 2: Convert to fraction form
    19,121.13/28,676.43 = 13,558.05/x
  3. Step 3: Cross multiply
    19,121.13x = 28,676.43 × 13,558.05
  4. Step 4: Simplify right side
    19,121.13x = 388,796,471.76
  5. Step 5: Solve for x
    x = 388,796,471.76/19,121.13
  6. Step 6: Final answer
    x = 20,333.34

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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.