Home / 12,000.39-18,011.31-11,955.75

Finding the Fourth Proportional to 12,000.39, 18,011.31 and 11,955.75

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Solution

The fourth proportional to 12,000.39, 18,011.31 and 11,955.75 is: 17,944.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.39 : 18,011.31 = 11,955.75 : x
  2. Step 2: Convert to fraction form
    12,000.39/18,011.31 = 11,955.75/x
  3. Step 3: Cross multiply
    12,000.39x = 18,011.31 × 11,955.75
  4. Step 4: Simplify right side
    12,000.39x = 215,338,719.53
  5. Step 5: Solve for x
    x = 215,338,719.53/12,000.39
  6. Step 6: Final answer
    x = 17,944.31

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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.