Home / 31,530.80-43,497.66-18,776.72

Finding the Fourth Proportional to 31,530.80, 43,497.66 and 18,776.72

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Solution

The fourth proportional to 31,530.80, 43,497.66 and 18,776.72 is: 25,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,530.80 : 43,497.66 = 18,776.72 : x
  2. Step 2: Convert to fraction form
    31,530.80/43,497.66 = 18,776.72/x
  3. Step 3: Cross multiply
    31,530.80x = 43,497.66 × 18,776.72
  4. Step 4: Simplify right side
    31,530.80x = 816,743,382.48
  5. Step 5: Solve for x
    x = 816,743,382.48/31,530.80
  6. Step 6: Final answer
    x = 25,903.03

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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.