Home / 31,518.45-43,494.87-17,178.39

Finding the Fourth Proportional to 31,518.45, 43,494.87 and 17,178.39

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Solution

The fourth proportional to 31,518.45, 43,494.87 and 17,178.39 is: 23,705.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.45 : 43,494.87 = 17,178.39 : x
  2. Step 2: Convert to fraction form
    31,518.45/43,494.87 = 17,178.39/x
  3. Step 3: Cross multiply
    31,518.45x = 43,494.87 × 17,178.39
  4. Step 4: Simplify right side
    31,518.45x = 747,171,839.86
  5. Step 5: Solve for x
    x = 747,171,839.86/31,518.45
  6. Step 6: Final answer
    x = 23,705.86

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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.