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Finding the Fourth Proportional to 19,774.88, 27,294 and 11,820.68

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Solution

The fourth proportional to 19,774.88, 27,294 and 11,820.68 is: 16,315.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,774.88 : 27,294 = 11,820.68 : x
  2. Step 2: Convert to fraction form
    19,774.88/27,294 = 11,820.68/x
  3. Step 3: Cross multiply
    19,774.88x = 27,294 × 11,820.68
  4. Step 4: Simplify right side
    19,774.88x = 322,633,639.92
  5. Step 5: Solve for x
    x = 322,633,639.92/19,774.88
  6. Step 6: Final answer
    x = 16,315.33

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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.