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Finding the Fourth Proportional to 17,486.40, 26,232.48 and 8,719.68

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Solution

The fourth proportional to 17,486.40, 26,232.48 and 8,719.68 is: 13,080.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,486.40 : 26,232.48 = 8,719.68 : x
  2. Step 2: Convert to fraction form
    17,486.40/26,232.48 = 8,719.68/x
  3. Step 3: Cross multiply
    17,486.40x = 26,232.48 × 8,719.68
  4. Step 4: Simplify right side
    17,486.40x = 228,738,831.21
  5. Step 5: Solve for x
    x = 228,738,831.21/17,486.40
  6. Step 6: Final answer
    x = 13,080.96

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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.