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Finding the Fourth Proportional to 18,779.67, 28,172.86 and 6,303.76

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Solution

The fourth proportional to 18,779.67, 28,172.86 and 6,303.76 is: 9,456.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,779.67 : 28,172.86 = 6,303.76 : x
  2. Step 2: Convert to fraction form
    18,779.67/28,172.86 = 6,303.76/x
  3. Step 3: Cross multiply
    18,779.67x = 28,172.86 × 6,303.76
  4. Step 4: Simplify right side
    18,779.67x = 177,594,861.76
  5. Step 5: Solve for x
    x = 177,594,861.76/18,779.67
  6. Step 6: Final answer
    x = 9,456.76

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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.