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Finding the Fourth Proportional to 13,372.88, 18,448.78 and 8,064.75

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Solution

The fourth proportional to 13,372.88, 18,448.78 and 8,064.75 is: 11,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.88 : 18,448.78 = 8,064.75 : x
  2. Step 2: Convert to fraction form
    13,372.88/18,448.78 = 8,064.75/x
  3. Step 3: Cross multiply
    13,372.88x = 18,448.78 × 8,064.75
  4. Step 4: Simplify right side
    13,372.88x = 148,784,798.51
  5. Step 5: Solve for x
    x = 148,784,798.51/13,372.88
  6. Step 6: Final answer
    x = 11,125.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.