Home / 11,290.76-16,913.40-5,429.60

Finding the Fourth Proportional to 11,290.76, 16,913.40 and 5,429.60

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Solution

The fourth proportional to 11,290.76, 16,913.40 and 5,429.60 is: 8,133.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.76 : 16,913.40 = 5,429.60 : x
  2. Step 2: Convert to fraction form
    11,290.76/16,913.40 = 5,429.60/x
  3. Step 3: Cross multiply
    11,290.76x = 16,913.40 × 5,429.60
  4. Step 4: Simplify right side
    11,290.76x = 91,832,996.64
  5. Step 5: Solve for x
    x = 91,832,996.64/11,290.76
  6. Step 6: Final answer
    x = 8,133.46

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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.