Home / 20,843.43-28,764.36-11,412.06

Finding the Fourth Proportional to 20,843.43, 28,764.36 and 11,412.06

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Solution

The fourth proportional to 20,843.43, 28,764.36 and 11,412.06 is: 15,748.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.43 : 28,764.36 = 11,412.06 : x
  2. Step 2: Convert to fraction form
    20,843.43/28,764.36 = 11,412.06/x
  3. Step 3: Cross multiply
    20,843.43x = 28,764.36 × 11,412.06
  4. Step 4: Simplify right side
    20,843.43x = 328,260,602.18
  5. Step 5: Solve for x
    x = 328,260,602.18/20,843.43
  6. Step 6: Final answer
    x = 15,748.88

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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.