Home / 31,881.03-43,993.09-18,453.12

Finding the Fourth Proportional to 31,881.03, 43,993.09 and 18,453.12

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Solution

The fourth proportional to 31,881.03, 43,993.09 and 18,453.12 is: 25,463.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,881.03 : 43,993.09 = 18,453.12 : x
  2. Step 2: Convert to fraction form
    31,881.03/43,993.09 = 18,453.12/x
  3. Step 3: Cross multiply
    31,881.03x = 43,993.09 × 18,453.12
  4. Step 4: Simplify right side
    31,881.03x = 811,809,627.03
  5. Step 5: Solve for x
    x = 811,809,627.03/31,881.03
  6. Step 6: Final answer
    x = 25,463.72

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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.