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Finding the Fourth Proportional to 21,335.28, 32,025.46 and 11,983.28

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Solution

The fourth proportional to 21,335.28, 32,025.46 and 11,983.28 is: 17,987.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.28 : 32,025.46 = 11,983.28 : x
  2. Step 2: Convert to fraction form
    21,335.28/32,025.46 = 11,983.28/x
  3. Step 3: Cross multiply
    21,335.28x = 32,025.46 × 11,983.28
  4. Step 4: Simplify right side
    21,335.28x = 383,770,054.31
  5. Step 5: Solve for x
    x = 383,770,054.31/21,335.28
  6. Step 6: Final answer
    x = 17,987.58

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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.