Home / 31,218.12-43,077.96-17,788.32

Finding the Fourth Proportional to 31,218.12, 43,077.96 and 17,788.32

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Solution

The fourth proportional to 31,218.12, 43,077.96 and 17,788.32 is: 24,546.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,218.12 : 43,077.96 = 17,788.32 : x
  2. Step 2: Convert to fraction form
    31,218.12/43,077.96 = 17,788.32/x
  3. Step 3: Cross multiply
    31,218.12x = 43,077.96 × 17,788.32
  4. Step 4: Simplify right side
    31,218.12x = 766,284,537.43
  5. Step 5: Solve for x
    x = 766,284,537.43/31,218.12
  6. Step 6: Final answer
    x = 24,546.15

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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.