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Finding the Fourth Proportional to 31,409.52, 43,327.60 and 19,301.60

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Solution

The fourth proportional to 31,409.52, 43,327.60 and 19,301.60 is: 26,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.52 : 43,327.60 = 19,301.60 : x
  2. Step 2: Convert to fraction form
    31,409.52/43,327.60 = 19,301.60/x
  3. Step 3: Cross multiply
    31,409.52x = 43,327.60 × 19,301.60
  4. Step 4: Simplify right side
    31,409.52x = 836,292,004.16
  5. Step 5: Solve for x
    x = 836,292,004.16/31,409.52
  6. Step 6: Final answer
    x = 26,625.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.