Home / 11,139.81-16,709.52-4,479.24

Finding the Fourth Proportional to 11,139.81, 16,709.52 and 4,479.24

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Solution

The fourth proportional to 11,139.81, 16,709.52 and 4,479.24 is: 6,718.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.81 : 16,709.52 = 4,479.24 : x
  2. Step 2: Convert to fraction form
    11,139.81/16,709.52 = 4,479.24/x
  3. Step 3: Cross multiply
    11,139.81x = 16,709.52 × 4,479.24
  4. Step 4: Simplify right side
    11,139.81x = 74,845,950.36
  5. Step 5: Solve for x
    x = 74,845,950.36/11,139.81
  6. Step 6: Final answer
    x = 6,718.78

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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.