Home / 21,972.06-32,949.87-7,928.28

Finding the Fourth Proportional to 21,972.06, 32,949.87 and 7,928.28

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Solution

The fourth proportional to 21,972.06, 32,949.87 and 7,928.28 is: 11,889.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.06 : 32,949.87 = 7,928.28 : x
  2. Step 2: Convert to fraction form
    21,972.06/32,949.87 = 7,928.28/x
  3. Step 3: Cross multiply
    21,972.06x = 32,949.87 × 7,928.28
  4. Step 4: Simplify right side
    21,972.06x = 261,235,795.32
  5. Step 5: Solve for x
    x = 261,235,795.32/21,972.06
  6. Step 6: Final answer
    x = 11,889.45

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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.