Home / 12,359.07-18,556.94-11,928.50

Finding the Fourth Proportional to 12,359.07, 18,556.94 and 11,928.50

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Solution

The fourth proportional to 12,359.07, 18,556.94 and 11,928.50 is: 17,910.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,359.07 : 18,556.94 = 11,928.50 : x
  2. Step 2: Convert to fraction form
    12,359.07/18,556.94 = 11,928.50/x
  3. Step 3: Cross multiply
    12,359.07x = 18,556.94 × 11,928.50
  4. Step 4: Simplify right side
    12,359.07x = 221,356,458.79
  5. Step 5: Solve for x
    x = 221,356,458.79/12,359.07
  6. Step 6: Final answer
    x = 17,910.45

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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.