Home / 31,554.80-43,546.63-18,128.75

Finding the Fourth Proportional to 31,554.80, 43,546.63 and 18,128.75

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Solution

The fourth proportional to 31,554.80, 43,546.63 and 18,128.75 is: 25,018.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,554.80 : 43,546.63 = 18,128.75 : x
  2. Step 2: Convert to fraction form
    31,554.80/43,546.63 = 18,128.75/x
  3. Step 3: Cross multiply
    31,554.80x = 43,546.63 × 18,128.75
  4. Step 4: Simplify right side
    31,554.80x = 789,445,968.61
  5. Step 5: Solve for x
    x = 789,445,968.61/31,554.80
  6. Step 6: Final answer
    x = 25,018.25

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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.