Home / 13,478.31-20,231.84-11,928.17

Finding the Fourth Proportional to 13,478.31, 20,231.84 and 11,928.17

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Solution

The fourth proportional to 13,478.31, 20,231.84 and 11,928.17 is: 17,904.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.31 : 20,231.84 = 11,928.17 : x
  2. Step 2: Convert to fraction form
    13,478.31/20,231.84 = 11,928.17/x
  3. Step 3: Cross multiply
    13,478.31x = 20,231.84 × 11,928.17
  4. Step 4: Simplify right side
    13,478.31x = 241,328,907.33
  5. Step 5: Solve for x
    x = 241,328,907.33/13,478.31
  6. Step 6: Final answer
    x = 17,904.98

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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.