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Finding the Fourth Proportional to 28,048.80, 42,072.96 and 8,327.52

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Solution

The fourth proportional to 28,048.80, 42,072.96 and 8,327.52 is: 12,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,048.80 : 42,072.96 = 8,327.52 : x
  2. Step 2: Convert to fraction form
    28,048.80/42,072.96 = 8,327.52/x
  3. Step 3: Cross multiply
    28,048.80x = 42,072.96 × 8,327.52
  4. Step 4: Simplify right side
    28,048.80x = 350,363,415.86
  5. Step 5: Solve for x
    x = 350,363,415.86/28,048.80
  6. Step 6: Final answer
    x = 12,491.21

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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.