Home / 12,003.14-18,004.80-11,985.86

Finding the Fourth Proportional to 12,003.14, 18,004.80 and 11,985.86

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Solution

The fourth proportional to 12,003.14, 18,004.80 and 11,985.86 is: 17,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,003.14 : 18,004.80 = 11,985.86 : x
  2. Step 2: Convert to fraction form
    12,003.14/18,004.80 = 11,985.86/x
  3. Step 3: Cross multiply
    12,003.14x = 18,004.80 × 11,985.86
  4. Step 4: Simplify right side
    12,003.14x = 215,803,012.13
  5. Step 5: Solve for x
    x = 215,803,012.13/12,003.14
  6. Step 6: Final answer
    x = 17,978.88

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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.