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Finding the Fourth Proportional to 28,328.75, 42,494.03 and 8,607.48

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Solution

The fourth proportional to 28,328.75, 42,494.03 and 8,607.48 is: 12,911.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.75 : 42,494.03 = 8,607.48 : x
  2. Step 2: Convert to fraction form
    28,328.75/42,494.03 = 8,607.48/x
  3. Step 3: Cross multiply
    28,328.75x = 42,494.03 × 8,607.48
  4. Step 4: Simplify right side
    28,328.75x = 365,766,470.31
  5. Step 5: Solve for x
    x = 365,766,470.31/28,328.75
  6. Step 6: Final answer
    x = 12,911.49

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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.