Home / 31,840.48-43,959.54-20,513.98

Finding the Fourth Proportional to 31,840.48, 43,959.54 and 20,513.98

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Solution

The fourth proportional to 31,840.48, 43,959.54 and 20,513.98 is: 28,321.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,840.48 : 43,959.54 = 20,513.98 : x
  2. Step 2: Convert to fraction form
    31,840.48/43,959.54 = 20,513.98/x
  3. Step 3: Cross multiply
    31,840.48x = 43,959.54 × 20,513.98
  4. Step 4: Simplify right side
    31,840.48x = 901,785,124.37
  5. Step 5: Solve for x
    x = 901,785,124.37/31,840.48
  6. Step 6: Final answer
    x = 28,321.97

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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.