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Finding the Fourth Proportional to 17,887.26, 26,831.15 and 5,407.39

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Solution

The fourth proportional to 17,887.26, 26,831.15 and 5,407.39 is: 8,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,887.26 : 26,831.15 = 5,407.39 : x
  2. Step 2: Convert to fraction form
    17,887.26/26,831.15 = 5,407.39/x
  3. Step 3: Cross multiply
    17,887.26x = 26,831.15 × 5,407.39
  4. Step 4: Simplify right side
    17,887.26x = 145,086,518.98
  5. Step 5: Solve for x
    x = 145,086,518.98/17,887.26
  6. Step 6: Final answer
    x = 8,111.16

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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.