Home / 31,755.06-43,824-18,328.80

Finding the Fourth Proportional to 31,755.06, 43,824 and 18,328.80

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Solution

The fourth proportional to 31,755.06, 43,824 and 18,328.80 is: 25,294.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,755.06 : 43,824 = 18,328.80 : x
  2. Step 2: Convert to fraction form
    31,755.06/43,824 = 18,328.80/x
  3. Step 3: Cross multiply
    31,755.06x = 43,824 × 18,328.80
  4. Step 4: Simplify right side
    31,755.06x = 803,241,331.20
  5. Step 5: Solve for x
    x = 803,241,331.20/31,755.06
  6. Step 6: Final answer
    x = 25,294.91

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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.