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Finding the Fourth Proportional to 18,609.96, 27,911.76 and 6,130.12

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Solution

The fourth proportional to 18,609.96, 27,911.76 and 6,130.12 is: 9,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.96 : 27,911.76 = 6,130.12 : x
  2. Step 2: Convert to fraction form
    18,609.96/27,911.76 = 6,130.12/x
  3. Step 3: Cross multiply
    18,609.96x = 27,911.76 × 6,130.12
  4. Step 4: Simplify right side
    18,609.96x = 171,102,438.21
  5. Step 5: Solve for x
    x = 171,102,438.21/18,609.96
  6. Step 6: Final answer
    x = 9,194.13

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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.