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Finding the Fourth Proportional to 13,699.84, 20,550.08 and 6,310.48

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Solution

The fourth proportional to 13,699.84, 20,550.08 and 6,310.48 is: 9,465.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,699.84 : 20,550.08 = 6,310.48 : x
  2. Step 2: Convert to fraction form
    13,699.84/20,550.08 = 6,310.48/x
  3. Step 3: Cross multiply
    13,699.84x = 20,550.08 × 6,310.48
  4. Step 4: Simplify right side
    13,699.84x = 129,680,868.84
  5. Step 5: Solve for x
    x = 129,680,868.84/13,699.84
  6. Step 6: Final answer
    x = 9,465.87

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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.