Home / 31,718.98-43,776.85-18,287.61

Finding the Fourth Proportional to 31,718.98, 43,776.85 and 18,287.61

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Solution

The fourth proportional to 31,718.98, 43,776.85 and 18,287.61 is: 25,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.98 : 43,776.85 = 18,287.61 : x
  2. Step 2: Convert to fraction form
    31,718.98/43,776.85 = 18,287.61/x
  3. Step 3: Cross multiply
    31,718.98x = 43,776.85 × 18,287.61
  4. Step 4: Simplify right side
    31,718.98x = 800,573,740.94
  5. Step 5: Solve for x
    x = 800,573,740.94/31,718.98
  6. Step 6: Final answer
    x = 25,239.58

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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.