Home / 31,653.94-43,670.18-20,320.42

Finding the Fourth Proportional to 31,653.94, 43,670.18 and 20,320.42

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Solution

The fourth proportional to 31,653.94, 43,670.18 and 20,320.42 is: 28,034.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,653.94 : 43,670.18 = 20,320.42 : x
  2. Step 2: Convert to fraction form
    31,653.94/43,670.18 = 20,320.42/x
  3. Step 3: Cross multiply
    31,653.94x = 43,670.18 × 20,320.42
  4. Step 4: Simplify right side
    31,653.94x = 887,396,399.08
  5. Step 5: Solve for x
    x = 887,396,399.08/31,653.94
  6. Step 6: Final answer
    x = 28,034.31

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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.