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Finding the Fourth Proportional to 14,392.50, 21,553.92 and 6,978.60

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Solution

The fourth proportional to 14,392.50, 21,553.92 and 6,978.60 is: 10,451.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,392.50 : 21,553.92 = 6,978.60 : x
  2. Step 2: Convert to fraction form
    14,392.50/21,553.92 = 6,978.60/x
  3. Step 3: Cross multiply
    14,392.50x = 21,553.92 × 6,978.60
  4. Step 4: Simplify right side
    14,392.50x = 150,416,186.11
  5. Step 5: Solve for x
    x = 150,416,186.11/14,392.50
  6. Step 6: Final answer
    x = 10,451.01

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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.