Home / 11,108.79-16,660.76-3,315.78

Finding the Fourth Proportional to 11,108.79, 16,660.76 and 3,315.78

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Solution

The fourth proportional to 11,108.79, 16,660.76 and 3,315.78 is: 4,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.79 : 16,660.76 = 3,315.78 : x
  2. Step 2: Convert to fraction form
    11,108.79/16,660.76 = 3,315.78/x
  3. Step 3: Cross multiply
    11,108.79x = 16,660.76 × 3,315.78
  4. Step 4: Simplify right side
    11,108.79x = 55,243,398.21
  5. Step 5: Solve for x
    x = 55,243,398.21/11,108.79
  6. Step 6: Final answer
    x = 4,972.94

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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.