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Finding the Fourth Proportional to 21,814.88, 32,725.44 and 7,018.88

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Solution

The fourth proportional to 21,814.88, 32,725.44 and 7,018.88 is: 10,529.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.88 : 32,725.44 = 7,018.88 : x
  2. Step 2: Convert to fraction form
    21,814.88/32,725.44 = 7,018.88/x
  3. Step 3: Cross multiply
    21,814.88x = 32,725.44 × 7,018.88
  4. Step 4: Simplify right side
    21,814.88x = 229,695,772.68
  5. Step 5: Solve for x
    x = 229,695,772.68/21,814.88
  6. Step 6: Final answer
    x = 10,529.32

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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.