Home / 31,412.42-43,359.24-20,112.35

Finding the Fourth Proportional to 31,412.42, 43,359.24 and 20,112.35

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Solution

The fourth proportional to 31,412.42, 43,359.24 and 20,112.35 is: 27,761.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,412.42 : 43,359.24 = 20,112.35 : x
  2. Step 2: Convert to fraction form
    31,412.42/43,359.24 = 20,112.35/x
  3. Step 3: Cross multiply
    31,412.42x = 43,359.24 × 20,112.35
  4. Step 4: Simplify right side
    31,412.42x = 872,055,893.26
  5. Step 5: Solve for x
    x = 872,055,893.26/31,412.42
  6. Step 6: Final answer
    x = 27,761.50

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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.