Home / 40,666.82-60,976.12-12,578.56

Finding the Fourth Proportional to 40,666.82, 60,976.12 and 12,578.56

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Solution

The fourth proportional to 40,666.82, 60,976.12 and 12,578.56 is: 18,860.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,666.82 : 60,976.12 = 12,578.56 : x
  2. Step 2: Convert to fraction form
    40,666.82/60,976.12 = 12,578.56/x
  3. Step 3: Cross multiply
    40,666.82x = 60,976.12 × 12,578.56
  4. Step 4: Simplify right side
    40,666.82x = 766,991,783.99
  5. Step 5: Solve for x
    x = 766,991,783.99/40,666.82
  6. Step 6: Final answer
    x = 18,860.38

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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.