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Finding the Fourth Proportional to 13,992.62, 19,309.85 and 7,619.26

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Solution

The fourth proportional to 13,992.62, 19,309.85 and 7,619.26 is: 10,514.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.62 : 19,309.85 = 7,619.26 : x
  2. Step 2: Convert to fraction form
    13,992.62/19,309.85 = 7,619.26/x
  3. Step 3: Cross multiply
    13,992.62x = 19,309.85 × 7,619.26
  4. Step 4: Simplify right side
    13,992.62x = 147,126,767.71
  5. Step 5: Solve for x
    x = 147,126,767.71/13,992.62
  6. Step 6: Final answer
    x = 10,514.60

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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.