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Finding the Fourth Proportional to 31,745.80, 43,809.80 and 17,404.68

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Solution

The fourth proportional to 31,745.80, 43,809.80 and 17,404.68 is: 24,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,745.80 : 43,809.80 = 17,404.68 : x
  2. Step 2: Convert to fraction form
    31,745.80/43,809.80 = 17,404.68/x
  3. Step 3: Cross multiply
    31,745.80x = 43,809.80 × 17,404.68
  4. Step 4: Simplify right side
    31,745.80x = 762,495,549.86
  5. Step 5: Solve for x
    x = 762,495,549.86/31,745.80
  6. Step 6: Final answer
    x = 24,018.79

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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.