Home / 20,781.84-31,170.03-5,992.25

Finding the Fourth Proportional to 20,781.84, 31,170.03 and 5,992.25

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Solution

The fourth proportional to 20,781.84, 31,170.03 and 5,992.25 is: 8,987.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781.84 : 31,170.03 = 5,992.25 : x
  2. Step 2: Convert to fraction form
    20,781.84/31,170.03 = 5,992.25/x
  3. Step 3: Cross multiply
    20,781.84x = 31,170.03 × 5,992.25
  4. Step 4: Simplify right side
    20,781.84x = 186,778,612.27
  5. Step 5: Solve for x
    x = 186,778,612.27/20,781.84
  6. Step 6: Final answer
    x = 8,987.59

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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.