Home / 31,836.40-43,922.30-19,731.35

Finding the Fourth Proportional to 31,836.40, 43,922.30 and 19,731.35

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Solution

The fourth proportional to 31,836.40, 43,922.30 and 19,731.35 is: 27,221.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,836.40 : 43,922.30 = 19,731.35 : x
  2. Step 2: Convert to fraction form
    31,836.40/43,922.30 = 19,731.35/x
  3. Step 3: Cross multiply
    31,836.40x = 43,922.30 × 19,731.35
  4. Step 4: Simplify right side
    31,836.40x = 866,646,274.11
  5. Step 5: Solve for x
    x = 866,646,274.11/31,836.40
  6. Step 6: Final answer
    x = 27,221.87

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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.