Home / 18,638.30-27,956.44-5,490.79

Finding the Fourth Proportional to 18,638.30, 27,956.44 and 5,490.79

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Solution

The fourth proportional to 18,638.30, 27,956.44 and 5,490.79 is: 8,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.30 : 27,956.44 = 5,490.79 : x
  2. Step 2: Convert to fraction form
    18,638.30/27,956.44 = 5,490.79/x
  3. Step 3: Cross multiply
    18,638.30x = 27,956.44 × 5,490.79
  4. Step 4: Simplify right side
    18,638.30x = 153,502,878.16
  5. Step 5: Solve for x
    x = 153,502,878.16/18,638.30
  6. Step 6: Final answer
    x = 8,235.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.