Home / 21,341.54-29,451.33-11,909.90

Finding the Fourth Proportional to 21,341.54, 29,451.33 and 11,909.90

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Solution

The fourth proportional to 21,341.54, 29,451.33 and 11,909.90 is: 16,435.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.54 : 29,451.33 = 11,909.90 : x
  2. Step 2: Convert to fraction form
    21,341.54/29,451.33 = 11,909.90/x
  3. Step 3: Cross multiply
    21,341.54x = 29,451.33 × 11,909.90
  4. Step 4: Simplify right side
    21,341.54x = 350,762,395.17
  5. Step 5: Solve for x
    x = 350,762,395.17/21,341.54
  6. Step 6: Final answer
    x = 16,435.66

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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.