Home / 31,370.82-43,288.85-18,621.83

Finding the Fourth Proportional to 31,370.82, 43,288.85 and 18,621.83

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Solution

The fourth proportional to 31,370.82, 43,288.85 and 18,621.83 is: 25,696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,370.82 : 43,288.85 = 18,621.83 : x
  2. Step 2: Convert to fraction form
    31,370.82/43,288.85 = 18,621.83/x
  3. Step 3: Cross multiply
    31,370.82x = 43,288.85 × 18,621.83
  4. Step 4: Simplify right side
    31,370.82x = 806,117,435.71
  5. Step 5: Solve for x
    x = 806,117,435.71/31,370.82
  6. Step 6: Final answer
    x = 25,696.41

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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.