Home / 18,771.48-25,849.53-16,781.31

Finding the Fourth Proportional to 18,771.48, 25,849.53 and 16,781.31

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Solution

The fourth proportional to 18,771.48, 25,849.53 and 16,781.31 is: 23,108.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.48 : 25,849.53 = 16,781.31 : x
  2. Step 2: Convert to fraction form
    18,771.48/25,849.53 = 16,781.31/x
  3. Step 3: Cross multiply
    18,771.48x = 25,849.53 × 16,781.31
  4. Step 4: Simplify right side
    18,771.48x = 433,788,976.28
  5. Step 5: Solve for x
    x = 433,788,976.28/18,771.48
  6. Step 6: Final answer
    x = 23,108.94

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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.