Home / 31,240.98-43,111.44-18,663.30

Finding the Fourth Proportional to 31,240.98, 43,111.44 and 18,663.30

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Solution

The fourth proportional to 31,240.98, 43,111.44 and 18,663.30 is: 25,754.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,240.98 : 43,111.44 = 18,663.30 : x
  2. Step 2: Convert to fraction form
    31,240.98/43,111.44 = 18,663.30/x
  3. Step 3: Cross multiply
    31,240.98x = 43,111.44 × 18,663.30
  4. Step 4: Simplify right side
    31,240.98x = 804,601,738.15
  5. Step 5: Solve for x
    x = 804,601,738.15/31,240.98
  6. Step 6: Final answer
    x = 25,754.69

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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.