Home / 31,276.14-43,161.09-17,128.98

Finding the Fourth Proportional to 31,276.14, 43,161.09 and 17,128.98

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Solution

The fourth proportional to 31,276.14, 43,161.09 and 17,128.98 is: 23,638.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,276.14 : 43,161.09 = 17,128.98 : x
  2. Step 2: Convert to fraction form
    31,276.14/43,161.09 = 17,128.98/x
  3. Step 3: Cross multiply
    31,276.14x = 43,161.09 × 17,128.98
  4. Step 4: Simplify right side
    31,276.14x = 739,305,383.15
  5. Step 5: Solve for x
    x = 739,305,383.15/31,276.14
  6. Step 6: Final answer
    x = 23,638.00

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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.