Home / 20,215.35-27,894.62-11,262.20

Finding the Fourth Proportional to 20,215.35, 27,894.62 and 11,262.20

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Solution

The fourth proportional to 20,215.35, 27,894.62 and 11,262.20 is: 15,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.35 : 27,894.62 = 11,262.20 : x
  2. Step 2: Convert to fraction form
    20,215.35/27,894.62 = 11,262.20/x
  3. Step 3: Cross multiply
    20,215.35x = 27,894.62 × 11,262.20
  4. Step 4: Simplify right side
    20,215.35x = 314,154,678.05
  5. Step 5: Solve for x
    x = 314,154,678.05/20,215.35
  6. Step 6: Final answer
    x = 15,540.40

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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.