Home / 31,703.76-43,749.60-18,274.20

Finding the Fourth Proportional to 31,703.76, 43,749.60 and 18,274.20

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Solution

The fourth proportional to 31,703.76, 43,749.60 and 18,274.20 is: 25,217.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,703.76 : 43,749.60 = 18,274.20 : x
  2. Step 2: Convert to fraction form
    31,703.76/43,749.60 = 18,274.20/x
  3. Step 3: Cross multiply
    31,703.76x = 43,749.60 × 18,274.20
  4. Step 4: Simplify right side
    31,703.76x = 799,488,940.32
  5. Step 5: Solve for x
    x = 799,488,940.32/31,703.76
  6. Step 6: Final answer
    x = 25,217.48

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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.