Home / 21,144.80-29,194.16-18,899.52

Finding the Fourth Proportional to 21,144.80, 29,194.16 and 18,899.52

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Solution

The fourth proportional to 21,144.80, 29,194.16 and 18,899.52 is: 26,094.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.80 : 29,194.16 = 18,899.52 : x
  2. Step 2: Convert to fraction form
    21,144.80/29,194.16 = 18,899.52/x
  3. Step 3: Cross multiply
    21,144.80x = 29,194.16 × 18,899.52
  4. Step 4: Simplify right side
    21,144.80x = 551,755,610.80
  5. Step 5: Solve for x
    x = 551,755,610.80/21,144.80
  6. Step 6: Final answer
    x = 26,094.15

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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.