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Finding the Fourth Proportional to 12,624.88, 17,412.08 and 11,109.16

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Solution

The fourth proportional to 12,624.88, 17,412.08 and 11,109.16 is: 15,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.88 : 17,412.08 = 11,109.16 : x
  2. Step 2: Convert to fraction form
    12,624.88/17,412.08 = 11,109.16/x
  3. Step 3: Cross multiply
    12,624.88x = 17,412.08 × 11,109.16
  4. Step 4: Simplify right side
    12,624.88x = 193,433,582.65
  5. Step 5: Solve for x
    x = 193,433,582.65/12,624.88
  6. Step 6: Final answer
    x = 15,321.62

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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.