Home / 11,187.15-16,782.54-3,688.47

Finding the Fourth Proportional to 11,187.15, 16,782.54 and 3,688.47

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Solution

The fourth proportional to 11,187.15, 16,782.54 and 3,688.47 is: 5,533.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.15 : 16,782.54 = 3,688.47 : x
  2. Step 2: Convert to fraction form
    11,187.15/16,782.54 = 3,688.47/x
  3. Step 3: Cross multiply
    11,187.15x = 16,782.54 × 3,688.47
  4. Step 4: Simplify right side
    11,187.15x = 61,901,895.31
  5. Step 5: Solve for x
    x = 61,901,895.31/11,187.15
  6. Step 6: Final answer
    x = 5,533.30

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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.