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Finding the Fourth Proportional to 18,606.40, 27,913.20 and 5,459.20

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Solution

The fourth proportional to 18,606.40, 27,913.20 and 5,459.20 is: 8,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.40 : 27,913.20 = 5,459.20 : x
  2. Step 2: Convert to fraction form
    18,606.40/27,913.20 = 5,459.20/x
  3. Step 3: Cross multiply
    18,606.40x = 27,913.20 × 5,459.20
  4. Step 4: Simplify right side
    18,606.40x = 152,383,741.44
  5. Step 5: Solve for x
    x = 152,383,741.44/18,606.40
  6. Step 6: Final answer
    x = 8,189.86

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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.