Home / 31,305.12-46,965.38-9,118.70

Finding the Fourth Proportional to 31,305.12, 46,965.38 and 9,118.70

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Solution

The fourth proportional to 31,305.12, 46,965.38 and 9,118.70 is: 13,680.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,305.12 : 46,965.38 = 9,118.70 : x
  2. Step 2: Convert to fraction form
    31,305.12/46,965.38 = 9,118.70/x
  3. Step 3: Cross multiply
    31,305.12x = 46,965.38 × 9,118.70
  4. Step 4: Simplify right side
    31,305.12x = 428,262,930.19
  5. Step 5: Solve for x
    x = 428,262,930.19/31,305.12
  6. Step 6: Final answer
    x = 13,680.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.