Home / 10,767.20-16,145.40-4,917.20

Finding the Fourth Proportional to 10,767.20, 16,145.40 and 4,917.20

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Solution

The fourth proportional to 10,767.20, 16,145.40 and 4,917.20 is: 7,373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,767.20 : 16,145.40 = 4,917.20 : x
  2. Step 2: Convert to fraction form
    10,767.20/16,145.40 = 4,917.20/x
  3. Step 3: Cross multiply
    10,767.20x = 16,145.40 × 4,917.20
  4. Step 4: Simplify right side
    10,767.20x = 79,390,160.88
  5. Step 5: Solve for x
    x = 79,390,160.88/10,767.20
  6. Step 6: Final answer
    x = 7,373.33

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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.