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Finding the Fourth Proportional to 18,779.48, 28,182 and 10,020.56

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Solution

The fourth proportional to 18,779.48, 28,182 and 10,020.56 is: 15,037.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.48 : 28,182 = 10,020.56 : x
  2. Step 2: Convert to fraction form
    18,779.48/28,182 = 10,020.56/x
  3. Step 3: Cross multiply
    18,779.48x = 28,182 × 10,020.56
  4. Step 4: Simplify right side
    18,779.48x = 282,399,421.92
  5. Step 5: Solve for x
    x = 282,399,421.92/18,779.48
  6. Step 6: Final answer
    x = 15,037.66

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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.