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Finding the Fourth Proportional to 18,779.22, 28,150.47 and 8,910.18

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Solution

The fourth proportional to 18,779.22, 28,150.47 and 8,910.18 is: 13,356.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.22 : 28,150.47 = 8,910.18 : x
  2. Step 2: Convert to fraction form
    18,779.22/28,150.47 = 8,910.18/x
  3. Step 3: Cross multiply
    18,779.22x = 28,150.47 × 8,910.18
  4. Step 4: Simplify right side
    18,779.22x = 250,825,754.78
  5. Step 5: Solve for x
    x = 250,825,754.78/18,779.22
  6. Step 6: Final answer
    x = 13,356.56

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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.