Home / 31,786.02-43,868.43-17,639.78

Finding the Fourth Proportional to 31,786.02, 43,868.43 and 17,639.78

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Solution

The fourth proportional to 31,786.02, 43,868.43 and 17,639.78 is: 24,344.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.02 : 43,868.43 = 17,639.78 : x
  2. Step 2: Convert to fraction form
    31,786.02/43,868.43 = 17,639.78/x
  3. Step 3: Cross multiply
    31,786.02x = 43,868.43 × 17,639.78
  4. Step 4: Simplify right side
    31,786.02x = 773,829,234.80
  5. Step 5: Solve for x
    x = 773,829,234.80/31,786.02
  6. Step 6: Final answer
    x = 24,344.96

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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.