Home / 18,898.52-28,331.37-13,620.56

Finding the Fourth Proportional to 18,898.52, 28,331.37 and 13,620.56

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Solution

The fourth proportional to 18,898.52, 28,331.37 and 13,620.56 is: 20,419.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898.52 : 28,331.37 = 13,620.56 : x
  2. Step 2: Convert to fraction form
    18,898.52/28,331.37 = 13,620.56/x
  3. Step 3: Cross multiply
    18,898.52x = 28,331.37 × 13,620.56
  4. Step 4: Simplify right side
    18,898.52x = 385,888,983.31
  5. Step 5: Solve for x
    x = 385,888,983.31/18,898.52
  6. Step 6: Final answer
    x = 20,419.01

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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.