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Finding the Fourth Proportional to 21,803.88, 32,706.13 and 6,221.50

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Solution

The fourth proportional to 21,803.88, 32,706.13 and 6,221.50 is: 9,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.88 : 32,706.13 = 6,221.50 : x
  2. Step 2: Convert to fraction form
    21,803.88/32,706.13 = 6,221.50/x
  3. Step 3: Cross multiply
    21,803.88x = 32,706.13 × 6,221.50
  4. Step 4: Simplify right side
    21,803.88x = 203,481,172.24
  5. Step 5: Solve for x
    x = 203,481,172.24/21,803.88
  6. Step 6: Final answer
    x = 9,332.34

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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.