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Finding the Fourth Proportional to 13,968.04, 19,275.96 and 8,379.04

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Solution

The fourth proportional to 13,968.04, 19,275.96 and 8,379.04 is: 11,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.04 : 19,275.96 = 8,379.04 : x
  2. Step 2: Convert to fraction form
    13,968.04/19,275.96 = 8,379.04/x
  3. Step 3: Cross multiply
    13,968.04x = 19,275.96 × 8,379.04
  4. Step 4: Simplify right side
    13,968.04x = 161,514,039.88
  5. Step 5: Solve for x
    x = 161,514,039.88/13,968.04
  6. Step 6: Final answer
    x = 11,563.11

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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.