Home / 31,800.98-43,887.42-18,372.80

Finding the Fourth Proportional to 31,800.98, 43,887.42 and 18,372.80

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Solution

The fourth proportional to 31,800.98, 43,887.42 and 18,372.80 is: 25,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,800.98 : 43,887.42 = 18,372.80 : x
  2. Step 2: Convert to fraction form
    31,800.98/43,887.42 = 18,372.80/x
  3. Step 3: Cross multiply
    31,800.98x = 43,887.42 × 18,372.80
  4. Step 4: Simplify right side
    31,800.98x = 806,334,570.74
  5. Step 5: Solve for x
    x = 806,334,570.74/31,800.98
  6. Step 6: Final answer
    x = 25,355.66

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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.