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Finding the Fourth Proportional to 13,468.16, 20,164.98 and 6,880.16

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Solution

The fourth proportional to 13,468.16, 20,164.98 and 6,880.16 is: 10,301.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,468.16 : 20,164.98 = 6,880.16 : x
  2. Step 2: Convert to fraction form
    13,468.16/20,164.98 = 6,880.16/x
  3. Step 3: Cross multiply
    13,468.16x = 20,164.98 × 6,880.16
  4. Step 4: Simplify right side
    13,468.16x = 138,738,288.80
  5. Step 5: Solve for x
    x = 138,738,288.80/13,468.16
  6. Step 6: Final answer
    x = 10,301.21

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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.