Home / 27,956.64-38,565.30-21,231.12

Finding the Fourth Proportional to 27,956.64, 38,565.30 and 21,231.12

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Solution

The fourth proportional to 27,956.64, 38,565.30 and 21,231.12 is: 29,287.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,956.64 : 38,565.30 = 21,231.12 : x
  2. Step 2: Convert to fraction form
    27,956.64/38,565.30 = 21,231.12/x
  3. Step 3: Cross multiply
    27,956.64x = 38,565.30 × 21,231.12
  4. Step 4: Simplify right side
    27,956.64x = 818,784,512.14
  5. Step 5: Solve for x
    x = 818,784,512.14/27,956.64
  6. Step 6: Final answer
    x = 29,287.66

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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.