Home / 12,087.86-18,031.34-11,887.38

Finding the Fourth Proportional to 12,087.86, 18,031.34 and 11,887.38

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Solution

The fourth proportional to 12,087.86, 18,031.34 and 11,887.38 is: 17,732.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.86 : 18,031.34 = 11,887.38 : x
  2. Step 2: Convert to fraction form
    12,087.86/18,031.34 = 11,887.38/x
  3. Step 3: Cross multiply
    12,087.86x = 18,031.34 × 11,887.38
  4. Step 4: Simplify right side
    12,087.86x = 214,345,390.49
  5. Step 5: Solve for x
    x = 214,345,390.49/12,087.86
  6. Step 6: Final answer
    x = 17,732.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.