Home / 10,928.12-15,076.49-6,729.08

Finding the Fourth Proportional to 10,928.12, 15,076.49 and 6,729.08

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Solution

The fourth proportional to 10,928.12, 15,076.49 and 6,729.08 is: 9,283.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.12 : 15,076.49 = 6,729.08 : x
  2. Step 2: Convert to fraction form
    10,928.12/15,076.49 = 6,729.08/x
  3. Step 3: Cross multiply
    10,928.12x = 15,076.49 × 6,729.08
  4. Step 4: Simplify right side
    10,928.12x = 101,450,907.33
  5. Step 5: Solve for x
    x = 101,450,907.33/10,928.12
  6. Step 6: Final answer
    x = 9,283.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.