Home / 30,819.11-42,530.06-16,671.65

Finding the Fourth Proportional to 30,819.11, 42,530.06 and 16,671.65

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Solution

The fourth proportional to 30,819.11, 42,530.06 and 16,671.65 is: 23,006.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,819.11 : 42,530.06 = 16,671.65 : x
  2. Step 2: Convert to fraction form
    30,819.11/42,530.06 = 16,671.65/x
  3. Step 3: Cross multiply
    30,819.11x = 42,530.06 × 16,671.65
  4. Step 4: Simplify right side
    30,819.11x = 709,046,103.83
  5. Step 5: Solve for x
    x = 709,046,103.83/30,819.11
  6. Step 6: Final answer
    x = 23,006.71

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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.