Home / 31,743.36-43,785.90-20,427.66

Finding the Fourth Proportional to 31,743.36, 43,785.90 and 20,427.66

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Solution

The fourth proportional to 31,743.36, 43,785.90 and 20,427.66 is: 28,177.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,743.36 : 43,785.90 = 20,427.66 : x
  2. Step 2: Convert to fraction form
    31,743.36/43,785.90 = 20,427.66/x
  3. Step 3: Cross multiply
    31,743.36x = 43,785.90 × 20,427.66
  4. Step 4: Simplify right side
    31,743.36x = 894,443,477.99
  5. Step 5: Solve for x
    x = 894,443,477.99/31,743.36
  6. Step 6: Final answer
    x = 28,177.34

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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.