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Finding the Fourth Proportional to 13,496.71, 20,245.06 and 6,918.70

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Solution

The fourth proportional to 13,496.71, 20,245.06 and 6,918.70 is: 10,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,496.71 : 20,245.06 = 6,918.70 : x
  2. Step 2: Convert to fraction form
    13,496.71/20,245.06 = 6,918.70/x
  3. Step 3: Cross multiply
    13,496.71x = 20,245.06 × 6,918.70
  4. Step 4: Simplify right side
    13,496.71x = 140,069,496.62
  5. Step 5: Solve for x
    x = 140,069,496.62/13,496.71
  6. Step 6: Final answer
    x = 10,378.05

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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.