Home / 11,151.05-15,385.73-6,435.32

Finding the Fourth Proportional to 11,151.05, 15,385.73 and 6,435.32

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Solution

The fourth proportional to 11,151.05, 15,385.73 and 6,435.32 is: 8,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.05 : 15,385.73 = 6,435.32 : x
  2. Step 2: Convert to fraction form
    11,151.05/15,385.73 = 6,435.32/x
  3. Step 3: Cross multiply
    11,151.05x = 15,385.73 × 6,435.32
  4. Step 4: Simplify right side
    11,151.05x = 99,011,986.88
  5. Step 5: Solve for x
    x = 99,011,986.88/11,151.05
  6. Step 6: Final answer
    x = 8,879.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.