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Finding the Fourth Proportional to 15,704.80, 23,614.80 and 13,170.40

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Solution

The fourth proportional to 15,704.80, 23,614.80 and 13,170.40 is: 19,803.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.80 : 23,614.80 = 13,170.40 : x
  2. Step 2: Convert to fraction form
    15,704.80/23,614.80 = 13,170.40/x
  3. Step 3: Cross multiply
    15,704.80x = 23,614.80 × 13,170.40
  4. Step 4: Simplify right side
    15,704.80x = 311,016,361.92
  5. Step 5: Solve for x
    x = 311,016,361.92/15,704.80
  6. Step 6: Final answer
    x = 19,803.90

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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.