Home / 21,341.28-29,451.42-11,909.64

Finding the Fourth Proportional to 21,341.28, 29,451.42 and 11,909.64

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Solution

The fourth proportional to 21,341.28, 29,451.42 and 11,909.64 is: 16,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.28 : 29,451.42 = 11,909.64 : x
  2. Step 2: Convert to fraction form
    21,341.28/29,451.42 = 11,909.64/x
  3. Step 3: Cross multiply
    21,341.28x = 29,451.42 × 11,909.64
  4. Step 4: Simplify right side
    21,341.28x = 350,755,809.69
  5. Step 5: Solve for x
    x = 350,755,809.69/21,341.28
  6. Step 6: Final answer
    x = 16,435.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.