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Finding the Fourth Proportional to 28,020.98, 42,027.87 and 8,299.10

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Solution

The fourth proportional to 28,020.98, 42,027.87 and 8,299.10 is: 12,447.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.98 : 42,027.87 = 8,299.10 : x
  2. Step 2: Convert to fraction form
    28,020.98/42,027.87 = 8,299.10/x
  3. Step 3: Cross multiply
    28,020.98x = 42,027.87 × 8,299.10
  4. Step 4: Simplify right side
    28,020.98x = 348,793,495.92
  5. Step 5: Solve for x
    x = 348,793,495.92/28,020.98
  6. Step 6: Final answer
    x = 12,447.58

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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.