Home / 18,828.20-28,249.74-8,971.88

Finding the Fourth Proportional to 18,828.20, 28,249.74 and 8,971.88

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Solution

The fourth proportional to 18,828.20, 28,249.74 and 8,971.88 is: 13,461.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.20 : 28,249.74 = 8,971.88 : x
  2. Step 2: Convert to fraction form
    18,828.20/28,249.74 = 8,971.88/x
  3. Step 3: Cross multiply
    18,828.20x = 28,249.74 × 8,971.88
  4. Step 4: Simplify right side
    18,828.20x = 253,453,277.31
  5. Step 5: Solve for x
    x = 253,453,277.31/18,828.20
  6. Step 6: Final answer
    x = 13,461.37

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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.