Home / 28,186.89-38,924.06-21,101.01

Finding the Fourth Proportional to 28,186.89, 38,924.06 and 21,101.01

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Solution

The fourth proportional to 28,186.89, 38,924.06 and 21,101.01 is: 29,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.89 : 38,924.06 = 21,101.01 : x
  2. Step 2: Convert to fraction form
    28,186.89/38,924.06 = 21,101.01/x
  3. Step 3: Cross multiply
    28,186.89x = 38,924.06 × 21,101.01
  4. Step 4: Simplify right side
    28,186.89x = 821,336,873.80
  5. Step 5: Solve for x
    x = 821,336,873.80/28,186.89
  6. Step 6: Final answer
    x = 29,138.97

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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.