Home / 21,622.76-29,839.36-12,191.33

Finding the Fourth Proportional to 21,622.76, 29,839.36 and 12,191.33

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Solution

The fourth proportional to 21,622.76, 29,839.36 and 12,191.33 is: 16,824.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.76 : 29,839.36 = 12,191.33 : x
  2. Step 2: Convert to fraction form
    21,622.76/29,839.36 = 12,191.33/x
  3. Step 3: Cross multiply
    21,622.76x = 29,839.36 × 12,191.33
  4. Step 4: Simplify right side
    21,622.76x = 363,781,484.75
  5. Step 5: Solve for x
    x = 363,781,484.75/21,622.76
  6. Step 6: Final answer
    x = 16,824.01

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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.