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Finding the Fourth Proportional to 13,966.98, 20,950.11 and 5,646.78

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Solution

The fourth proportional to 13,966.98, 20,950.11 and 5,646.78 is: 8,470.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,966.98 : 20,950.11 = 5,646.78 : x
  2. Step 2: Convert to fraction form
    13,966.98/20,950.11 = 5,646.78/x
  3. Step 3: Cross multiply
    13,966.98x = 20,950.11 × 5,646.78
  4. Step 4: Simplify right side
    13,966.98x = 118,300,662.15
  5. Step 5: Solve for x
    x = 118,300,662.15/13,966.98
  6. Step 6: Final answer
    x = 8,470.02

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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.