Home / 18,770.48-28,165.44-13,618.88

Finding the Fourth Proportional to 18,770.48, 28,165.44 and 13,618.88

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Solution

The fourth proportional to 18,770.48, 28,165.44 and 13,618.88 is: 20,435.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.48 : 28,165.44 = 13,618.88 : x
  2. Step 2: Convert to fraction form
    18,770.48/28,165.44 = 13,618.88/x
  3. Step 3: Cross multiply
    18,770.48x = 28,165.44 × 13,618.88
  4. Step 4: Simplify right side
    18,770.48x = 383,581,747.51
  5. Step 5: Solve for x
    x = 383,581,747.51/18,770.48
  6. Step 6: Final answer
    x = 20,435.37

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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.