Home / 22,820.68-31,489.43-12,747.84

Finding the Fourth Proportional to 22,820.68, 31,489.43 and 12,747.84

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Solution

The fourth proportional to 22,820.68, 31,489.43 and 12,747.84 is: 17,590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,820.68 : 31,489.43 = 12,747.84 : x
  2. Step 2: Convert to fraction form
    22,820.68/31,489.43 = 12,747.84/x
  3. Step 3: Cross multiply
    22,820.68x = 31,489.43 × 12,747.84
  4. Step 4: Simplify right side
    22,820.68x = 401,422,215.33
  5. Step 5: Solve for x
    x = 401,422,215.33/22,820.68
  6. Step 6: Final answer
    x = 17,590.28

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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.