Home / 21,934.50-30,270.34-11,998.50

Finding the Fourth Proportional to 21,934.50, 30,270.34 and 11,998.50

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Solution

The fourth proportional to 21,934.50, 30,270.34 and 11,998.50 is: 16,558.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,934.50 : 30,270.34 = 11,998.50 : x
  2. Step 2: Convert to fraction form
    21,934.50/30,270.34 = 11,998.50/x
  3. Step 3: Cross multiply
    21,934.50x = 30,270.34 × 11,998.50
  4. Step 4: Simplify right side
    21,934.50x = 363,198,674.49
  5. Step 5: Solve for x
    x = 363,198,674.49/21,934.50
  6. Step 6: Final answer
    x = 16,558.33

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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.