Home / 31,285.36-43,179.36-18,718.48

Finding the Fourth Proportional to 31,285.36, 43,179.36 and 18,718.48

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Solution

The fourth proportional to 31,285.36, 43,179.36 and 18,718.48 is: 25,834.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,285.36 : 43,179.36 = 18,718.48 : x
  2. Step 2: Convert to fraction form
    31,285.36/43,179.36 = 18,718.48/x
  3. Step 3: Cross multiply
    31,285.36x = 43,179.36 × 18,718.48
  4. Step 4: Simplify right side
    31,285.36x = 808,251,986.57
  5. Step 5: Solve for x
    x = 808,251,986.57/31,285.36
  6. Step 6: Final answer
    x = 25,834.83

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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.