Home / 31,622.61-43,640.88-18,195.90

Finding the Fourth Proportional to 31,622.61, 43,640.88 and 18,195.90

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Solution

The fourth proportional to 31,622.61, 43,640.88 and 18,195.90 is: 25,111.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,622.61 : 43,640.88 = 18,195.90 : x
  2. Step 2: Convert to fraction form
    31,622.61/43,640.88 = 18,195.90/x
  3. Step 3: Cross multiply
    31,622.61x = 43,640.88 × 18,195.90
  4. Step 4: Simplify right side
    31,622.61x = 794,085,088.39
  5. Step 5: Solve for x
    x = 794,085,088.39/31,622.61
  6. Step 6: Final answer
    x = 25,111.31

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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.