Home / 31,240.36-43,110.66-18,657.64

Finding the Fourth Proportional to 31,240.36, 43,110.66 and 18,657.64

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Solution

The fourth proportional to 31,240.36, 43,110.66 and 18,657.64 is: 25,746.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,240.36 : 43,110.66 = 18,657.64 : x
  2. Step 2: Convert to fraction form
    31,240.36/43,110.66 = 18,657.64/x
  3. Step 3: Cross multiply
    31,240.36x = 43,110.66 × 18,657.64
  4. Step 4: Simplify right side
    31,240.36x = 804,343,174.44
  5. Step 5: Solve for x
    x = 804,343,174.44/31,240.36
  6. Step 6: Final answer
    x = 25,746.92

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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.