Home / 11,274.40-16,916.40-7,117.60

Finding the Fourth Proportional to 11,274.40, 16,916.40 and 7,117.60

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Solution

The fourth proportional to 11,274.40, 16,916.40 and 7,117.60 is: 10,679.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,274.40 : 16,916.40 = 7,117.60 : x
  2. Step 2: Convert to fraction form
    11,274.40/16,916.40 = 7,117.60/x
  3. Step 3: Cross multiply
    11,274.40x = 16,916.40 × 7,117.60
  4. Step 4: Simplify right side
    11,274.40x = 120,404,168.64
  5. Step 5: Solve for x
    x = 120,404,168.64/11,274.40
  6. Step 6: Final answer
    x = 10,679.43

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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.