Home / 31,453.31-43,407.09-19,520.60

Finding the Fourth Proportional to 31,453.31, 43,407.09 and 19,520.60

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Solution

The fourth proportional to 31,453.31, 43,407.09 and 19,520.60 is: 26,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,453.31 : 43,407.09 = 19,520.60 : x
  2. Step 2: Convert to fraction form
    31,453.31/43,407.09 = 19,520.60/x
  3. Step 3: Cross multiply
    31,453.31x = 43,407.09 × 19,520.60
  4. Step 4: Simplify right side
    31,453.31x = 847,332,224.02
  5. Step 5: Solve for x
    x = 847,332,224.02/31,453.31
  6. Step 6: Final answer
    x = 26,939.36

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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.