Home / 11,278.63-16,920.38-4,705.48

Finding the Fourth Proportional to 11,278.63, 16,920.38 and 4,705.48

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Solution

The fourth proportional to 11,278.63, 16,920.38 and 4,705.48 is: 7,059.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.63 : 16,920.38 = 4,705.48 : x
  2. Step 2: Convert to fraction form
    11,278.63/16,920.38 = 4,705.48/x
  3. Step 3: Cross multiply
    11,278.63x = 16,920.38 × 4,705.48
  4. Step 4: Simplify right side
    11,278.63x = 79,618,509.68
  5. Step 5: Solve for x
    x = 79,618,509.68/11,278.63
  6. Step 6: Final answer
    x = 7,059.24

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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.