Home / 11,412.20-17,116.56-3,620

Finding the Fourth Proportional to 11,412.20, 17,116.56 and 3,620

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Solution

The fourth proportional to 11,412.20, 17,116.56 and 3,620 is: 5,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,412.20 : 17,116.56 = 3,620 : x
  2. Step 2: Convert to fraction form
    11,412.20/17,116.56 = 3,620/x
  3. Step 3: Cross multiply
    11,412.20x = 17,116.56 × 3,620
  4. Step 4: Simplify right side
    11,412.20x = 61,961,947.20
  5. Step 5: Solve for x
    x = 61,961,947.20/11,412.20
  6. Step 6: Final answer
    x = 5,429.45

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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.