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Finding the Fourth Proportional to 18,609.32, 27,900.61 and 8,743.12

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Solution

The fourth proportional to 18,609.32, 27,900.61 and 8,743.12 is: 13,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.32 : 27,900.61 = 8,743.12 : x
  2. Step 2: Convert to fraction form
    18,609.32/27,900.61 = 8,743.12/x
  3. Step 3: Cross multiply
    18,609.32x = 27,900.61 × 8,743.12
  4. Step 4: Simplify right side
    18,609.32x = 243,938,381.30
  5. Step 5: Solve for x
    x = 243,938,381.30/18,609.32
  6. Step 6: Final answer
    x = 13,108.40

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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.