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Finding the Fourth Proportional to 14,674.92, 20,191.32 and 12,679.08

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Solution

The fourth proportional to 14,674.92, 20,191.32 and 12,679.08 is: 17,445.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,674.92 : 20,191.32 = 12,679.08 : x
  2. Step 2: Convert to fraction form
    14,674.92/20,191.32 = 12,679.08/x
  3. Step 3: Cross multiply
    14,674.92x = 20,191.32 × 12,679.08
  4. Step 4: Simplify right side
    14,674.92x = 256,007,361.59
  5. Step 5: Solve for x
    x = 256,007,361.59/14,674.92
  6. Step 6: Final answer
    x = 17,445.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.