Home / 21,549.52-29,755.56-13,999.60

Finding the Fourth Proportional to 21,549.52, 29,755.56 and 13,999.60

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Solution

The fourth proportional to 21,549.52, 29,755.56 and 13,999.60 is: 19,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.52 : 29,755.56 = 13,999.60 : x
  2. Step 2: Convert to fraction form
    21,549.52/29,755.56 = 13,999.60/x
  3. Step 3: Cross multiply
    21,549.52x = 29,755.56 × 13,999.60
  4. Step 4: Simplify right side
    21,549.52x = 416,565,937.78
  5. Step 5: Solve for x
    x = 416,565,937.78/21,549.52
  6. Step 6: Final answer
    x = 19,330.64

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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.