Home / 12,187.91-18,289.14-11,196.47

Finding the Fourth Proportional to 12,187.91, 18,289.14 and 11,196.47

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Solution

The fourth proportional to 12,187.91, 18,289.14 and 11,196.47 is: 16,801.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.91 : 18,289.14 = 11,196.47 : x
  2. Step 2: Convert to fraction form
    12,187.91/18,289.14 = 11,196.47/x
  3. Step 3: Cross multiply
    12,187.91x = 18,289.14 × 11,196.47
  4. Step 4: Simplify right side
    12,187.91x = 204,773,807.34
  5. Step 5: Solve for x
    x = 204,773,807.34/12,187.91
  6. Step 6: Final answer
    x = 16,801.39

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1.5x scale

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.