Home / 21,972.16-32,959.44-7,185.60

Finding the Fourth Proportional to 21,972.16, 32,959.44 and 7,185.60

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Solution

The fourth proportional to 21,972.16, 32,959.44 and 7,185.60 is: 10,778.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.16 : 32,959.44 = 7,185.60 : x
  2. Step 2: Convert to fraction form
    21,972.16/32,959.44 = 7,185.60/x
  3. Step 3: Cross multiply
    21,972.16x = 32,959.44 × 7,185.60
  4. Step 4: Simplify right side
    21,972.16x = 236,833,352.06
  5. Step 5: Solve for x
    x = 236,833,352.06/21,972.16
  6. Step 6: Final answer
    x = 10,778.79

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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.