Home / 21,838.28-32,757.60-11,972.16

Finding the Fourth Proportional to 21,838.28, 32,757.60 and 11,972.16

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Solution

The fourth proportional to 21,838.28, 32,757.60 and 11,972.16 is: 17,958.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,838.28 : 32,757.60 = 11,972.16 : x
  2. Step 2: Convert to fraction form
    21,838.28/32,757.60 = 11,972.16/x
  3. Step 3: Cross multiply
    21,838.28x = 32,757.60 × 11,972.16
  4. Step 4: Simplify right side
    21,838.28x = 392,179,228.42
  5. Step 5: Solve for x
    x = 392,179,228.42/21,838.28
  6. Step 6: Final answer
    x = 17,958.34

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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.