Home / 30,645.15-45,946.11-11,909.58

Finding the Fourth Proportional to 30,645.15, 45,946.11 and 11,909.58

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Solution

The fourth proportional to 30,645.15, 45,946.11 and 11,909.58 is: 17,855.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.15 : 45,946.11 = 11,909.58 : x
  2. Step 2: Convert to fraction form
    30,645.15/45,946.11 = 11,909.58/x
  3. Step 3: Cross multiply
    30,645.15x = 45,946.11 × 11,909.58
  4. Step 4: Simplify right side
    30,645.15x = 547,198,872.73
  5. Step 5: Solve for x
    x = 547,198,872.73/30,645.15
  6. Step 6: Final answer
    x = 17,855.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.