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Finding the Fourth Proportional to 19,489.68, 26,894.12 and 11,932.76

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Solution

The fourth proportional to 19,489.68, 26,894.12 and 11,932.76 is: 16,466.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489.68 : 26,894.12 = 11,932.76 : x
  2. Step 2: Convert to fraction form
    19,489.68/26,894.12 = 11,932.76/x
  3. Step 3: Cross multiply
    19,489.68x = 26,894.12 × 11,932.76
  4. Step 4: Simplify right side
    19,489.68x = 320,921,079.37
  5. Step 5: Solve for x
    x = 320,921,079.37/19,489.68
  6. Step 6: Final answer
    x = 16,466.21

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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.