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Finding the Fourth Proportional to 17,487.76, 26,212.54 and 8,609.20

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Solution

The fourth proportional to 17,487.76, 26,212.54 and 8,609.20 is: 12,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,487.76 : 26,212.54 = 8,609.20 : x
  2. Step 2: Convert to fraction form
    17,487.76/26,212.54 = 8,609.20/x
  3. Step 3: Cross multiply
    17,487.76x = 26,212.54 × 8,609.20
  4. Step 4: Simplify right side
    17,487.76x = 225,668,999.37
  5. Step 5: Solve for x
    x = 225,668,999.37/17,487.76
  6. Step 6: Final answer
    x = 12,904.40

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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.