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Finding the Fourth Proportional to 19,419.82, 26,799.03 and 10,805.68

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Solution

The fourth proportional to 19,419.82, 26,799.03 and 10,805.68 is: 14,911.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.82 : 26,799.03 = 10,805.68 : x
  2. Step 2: Convert to fraction form
    19,419.82/26,799.03 = 10,805.68/x
  3. Step 3: Cross multiply
    19,419.82x = 26,799.03 × 10,805.68
  4. Step 4: Simplify right side
    19,419.82x = 289,581,742.49
  5. Step 5: Solve for x
    x = 289,581,742.49/19,419.82
  6. Step 6: Final answer
    x = 14,911.66

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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.