Home / 39,630.37-54,690.30-21,725.74

Finding the Fourth Proportional to 39,630.37, 54,690.30 and 21,725.74

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Solution

The fourth proportional to 39,630.37, 54,690.30 and 21,725.74 is: 29,981.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,630.37 : 54,690.30 = 21,725.74 : x
  2. Step 2: Convert to fraction form
    39,630.37/54,690.30 = 21,725.74/x
  3. Step 3: Cross multiply
    39,630.37x = 54,690.30 × 21,725.74
  4. Step 4: Simplify right side
    39,630.37x = 1,188,187,238.32
  5. Step 5: Solve for x
    x = 1,188,187,238.32/39,630.37
  6. Step 6: Final answer
    x = 29,981.73

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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.