Home / 31,546.18-43,533.41-18,121.65

Finding the Fourth Proportional to 31,546.18, 43,533.41 and 18,121.65

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Solution

The fourth proportional to 31,546.18, 43,533.41 and 18,121.65 is: 25,007.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,546.18 : 43,533.41 = 18,121.65 : x
  2. Step 2: Convert to fraction form
    31,546.18/43,533.41 = 18,121.65/x
  3. Step 3: Cross multiply
    31,546.18x = 43,533.41 × 18,121.65
  4. Step 4: Simplify right side
    31,546.18x = 788,897,219.33
  5. Step 5: Solve for x
    x = 788,897,219.33/31,546.18
  6. Step 6: Final answer
    x = 25,007.69

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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.