Home / 31,558.77-43,551.05-18,131.00

Finding the Fourth Proportional to 31,558.77, 43,551.05 and 18,131.00

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Solution

The fourth proportional to 31,558.77, 43,551.05 and 18,131.00 is: 25,020.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,558.77 : 43,551.05 = 18,131.00 : x
  2. Step 2: Convert to fraction form
    31,558.77/43,551.05 = 18,131.00/x
  3. Step 3: Cross multiply
    31,558.77x = 43,551.05 × 18,131.00
  4. Step 4: Simplify right side
    31,558.77x = 789,623,779.14
  5. Step 5: Solve for x
    x = 789,623,779.14/31,558.77
  6. Step 6: Final answer
    x = 25,020.74

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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.