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Finding the Fourth Proportional to 19,919.76, 27,489.07 and 10,967.09

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Solution

The fourth proportional to 19,919.76, 27,489.07 and 10,967.09 is: 15,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.76 : 27,489.07 = 10,967.09 : x
  2. Step 2: Convert to fraction form
    19,919.76/27,489.07 = 10,967.09/x
  3. Step 3: Cross multiply
    19,919.76x = 27,489.07 × 10,967.09
  4. Step 4: Simplify right side
    19,919.76x = 301,475,104.71
  5. Step 5: Solve for x
    x = 301,475,104.71/19,919.76
  6. Step 6: Final answer
    x = 15,134.47

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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.