Home / 31,653.42-43,690.35-19,709.70

Finding the Fourth Proportional to 31,653.42, 43,690.35 and 19,709.70

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Solution

The fourth proportional to 31,653.42, 43,690.35 and 19,709.70 is: 27,204.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,653.42 : 43,690.35 = 19,709.70 : x
  2. Step 2: Convert to fraction form
    31,653.42/43,690.35 = 19,709.70/x
  3. Step 3: Cross multiply
    31,653.42x = 43,690.35 × 19,709.70
  4. Step 4: Simplify right side
    31,653.42x = 861,123,691.40
  5. Step 5: Solve for x
    x = 861,123,691.40/31,653.42
  6. Step 6: Final answer
    x = 27,204.76

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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.