Home / 31,568.40-43,558.56-20,239.92

Finding the Fourth Proportional to 31,568.40, 43,558.56 and 20,239.92

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Solution

The fourth proportional to 31,568.40, 43,558.56 and 20,239.92 is: 27,927.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,568.40 : 43,558.56 = 20,239.92 : x
  2. Step 2: Convert to fraction form
    31,568.40/43,558.56 = 20,239.92/x
  3. Step 3: Cross multiply
    31,568.40x = 43,558.56 × 20,239.92
  4. Step 4: Simplify right side
    31,568.40x = 881,621,769.72
  5. Step 5: Solve for x
    x = 881,621,769.72/31,568.40
  6. Step 6: Final answer
    x = 27,927.35

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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.