Home / 31,810.98-43,905.60-18,382.80

Finding the Fourth Proportional to 31,810.98, 43,905.60 and 18,382.80

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Solution

The fourth proportional to 31,810.98, 43,905.60 and 18,382.80 is: 25,371.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,810.98 : 43,905.60 = 18,382.80 : x
  2. Step 2: Convert to fraction form
    31,810.98/43,905.60 = 18,382.80/x
  3. Step 3: Cross multiply
    31,810.98x = 43,905.60 × 18,382.80
  4. Step 4: Simplify right side
    31,810.98x = 807,107,863.68
  5. Step 5: Solve for x
    x = 807,107,863.68/31,810.98
  6. Step 6: Final answer
    x = 25,371.99

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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.