Home / 11,111.28-16,664-3,318.24

Finding the Fourth Proportional to 11,111.28, 16,664 and 3,318.24

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Solution

The fourth proportional to 11,111.28, 16,664 and 3,318.24 is: 4,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.28 : 16,664 = 3,318.24 : x
  2. Step 2: Convert to fraction form
    11,111.28/16,664 = 3,318.24/x
  3. Step 3: Cross multiply
    11,111.28x = 16,664 × 3,318.24
  4. Step 4: Simplify right side
    11,111.28x = 55,295,151.36
  5. Step 5: Solve for x
    x = 55,295,151.36/11,111.28
  6. Step 6: Final answer
    x = 4,976.49

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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.