Home / 31,885.53-43,999.31-18,457.62

Finding the Fourth Proportional to 31,885.53, 43,999.31 and 18,457.62

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Solution

The fourth proportional to 31,885.53, 43,999.31 and 18,457.62 is: 25,469.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,885.53 : 43,999.31 = 18,457.62 : x
  2. Step 2: Convert to fraction form
    31,885.53/43,999.31 = 18,457.62/x
  3. Step 3: Cross multiply
    31,885.53x = 43,999.31 × 18,457.62
  4. Step 4: Simplify right side
    31,885.53x = 812,122,451.95
  5. Step 5: Solve for x
    x = 812,122,451.95/31,885.53
  6. Step 6: Final answer
    x = 25,469.94

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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.