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Finding the Fourth Proportional to 12,527.79, 18,784.38 and 8,372.49

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Solution

The fourth proportional to 12,527.79, 18,784.38 and 8,372.49 is: 12,553.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,527.79 : 18,784.38 = 8,372.49 : x
  2. Step 2: Convert to fraction form
    12,527.79/18,784.38 = 8,372.49/x
  3. Step 3: Cross multiply
    12,527.79x = 18,784.38 × 8,372.49
  4. Step 4: Simplify right side
    12,527.79x = 157,272,033.71
  5. Step 5: Solve for x
    x = 157,272,033.71/12,527.79
  6. Step 6: Final answer
    x = 12,553.85

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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.