Home / 21,348.90-29,460.87-11,917.26

Finding the Fourth Proportional to 21,348.90, 29,460.87 and 11,917.26

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Solution

The fourth proportional to 21,348.90, 29,460.87 and 11,917.26 is: 16,445.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.90 : 29,460.87 = 11,917.26 : x
  2. Step 2: Convert to fraction form
    21,348.90/29,460.87 = 11,917.26/x
  3. Step 3: Cross multiply
    21,348.90x = 29,460.87 × 11,917.26
  4. Step 4: Simplify right side
    21,348.90x = 351,092,847.62
  5. Step 5: Solve for x
    x = 351,092,847.62/21,348.90
  6. Step 6: Final answer
    x = 16,445.48

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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.