Home / 31,205.06-43,064.68-18,465.78

Finding the Fourth Proportional to 31,205.06, 43,064.68 and 18,465.78

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Solution

The fourth proportional to 31,205.06, 43,064.68 and 18,465.78 is: 25,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,205.06 : 43,064.68 = 18,465.78 : x
  2. Step 2: Convert to fraction form
    31,205.06/43,064.68 = 18,465.78/x
  3. Step 3: Cross multiply
    31,205.06x = 43,064.68 × 18,465.78
  4. Step 4: Simplify right side
    31,205.06x = 795,222,906.65
  5. Step 5: Solve for x
    x = 795,222,906.65/31,205.06
  6. Step 6: Final answer
    x = 25,483.78

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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.