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Finding the Fourth Proportional to 28,968.48, 43,440.48 and 12,327.84

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Solution

The fourth proportional to 28,968.48, 43,440.48 and 12,327.84 is: 18,486.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,968.48 : 43,440.48 = 12,327.84 : x
  2. Step 2: Convert to fraction form
    28,968.48/43,440.48 = 12,327.84/x
  3. Step 3: Cross multiply
    28,968.48x = 43,440.48 × 12,327.84
  4. Step 4: Simplify right side
    28,968.48x = 535,527,286.96
  5. Step 5: Solve for x
    x = 535,527,286.96/28,968.48
  6. Step 6: Final answer
    x = 18,486.55

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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.