Home / 30,811.62-42,519.96-16,664.70

Finding the Fourth Proportional to 30,811.62, 42,519.96 and 16,664.70

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Solution

The fourth proportional to 30,811.62, 42,519.96 and 16,664.70 is: 22,997.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.62 : 42,519.96 = 16,664.70 : x
  2. Step 2: Convert to fraction form
    30,811.62/42,519.96 = 16,664.70/x
  3. Step 3: Cross multiply
    30,811.62x = 42,519.96 × 16,664.70
  4. Step 4: Simplify right side
    30,811.62x = 708,582,377.41
  5. Step 5: Solve for x
    x = 708,582,377.41/30,811.62
  6. Step 6: Final answer
    x = 22,997.25

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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.