Home / 10,771.36-16,155.21-2,978.35

Finding the Fourth Proportional to 10,771.36, 16,155.21 and 2,978.35

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Solution

The fourth proportional to 10,771.36, 16,155.21 and 2,978.35 is: 4,467.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,771.36 : 16,155.21 = 2,978.35 : x
  2. Step 2: Convert to fraction form
    10,771.36/16,155.21 = 2,978.35/x
  3. Step 3: Cross multiply
    10,771.36x = 16,155.21 × 2,978.35
  4. Step 4: Simplify right side
    10,771.36x = 48,115,829.32
  5. Step 5: Solve for x
    x = 48,115,829.32/10,771.36
  6. Step 6: Final answer
    x = 4,467.02

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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.