Home / 18,781.09-28,130.69-9,404.75

Finding the Fourth Proportional to 18,781.09, 28,130.69 and 9,404.75

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Solution

The fourth proportional to 18,781.09, 28,130.69 and 9,404.75 is: 14,086.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,781.09 : 28,130.69 = 9,404.75 : x
  2. Step 2: Convert to fraction form
    18,781.09/28,130.69 = 9,404.75/x
  3. Step 3: Cross multiply
    18,781.09x = 28,130.69 × 9,404.75
  4. Step 4: Simplify right side
    18,781.09x = 264,562,200.62
  5. Step 5: Solve for x
    x = 264,562,200.62/18,781.09
  6. Step 6: Final answer
    x = 14,086.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.