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Finding the Fourth Proportional to 18,609.24, 27,906.30 and 12,077.40

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Solution

The fourth proportional to 18,609.24, 27,906.30 and 12,077.40 is: 18,111.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.24 : 27,906.30 = 12,077.40 : x
  2. Step 2: Convert to fraction form
    18,609.24/27,906.30 = 12,077.40/x
  3. Step 3: Cross multiply
    18,609.24x = 27,906.30 × 12,077.40
  4. Step 4: Simplify right side
    18,609.24x = 337,035,547.62
  5. Step 5: Solve for x
    x = 337,035,547.62/18,609.24
  6. Step 6: Final answer
    x = 18,111.19

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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.