Home / 21,741.60-29,999.73-13,240.86

Finding the Fourth Proportional to 21,741.60, 29,999.73 and 13,240.86

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Solution

The fourth proportional to 21,741.60, 29,999.73 and 13,240.86 is: 18,270.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,741.60 : 29,999.73 = 13,240.86 : x
  2. Step 2: Convert to fraction form
    21,741.60/29,999.73 = 13,240.86/x
  3. Step 3: Cross multiply
    21,741.60x = 29,999.73 × 13,240.86
  4. Step 4: Simplify right side
    21,741.60x = 397,222,224.97
  5. Step 5: Solve for x
    x = 397,222,224.97/21,741.60
  6. Step 6: Final answer
    x = 18,270.15

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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.