Home / 13,704.80-18,912.56-7,417.12

Finding the Fourth Proportional to 13,704.80, 18,912.56 and 7,417.12

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Solution

The fourth proportional to 13,704.80, 18,912.56 and 7,417.12 is: 10,235.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.80 : 18,912.56 = 7,417.12 : x
  2. Step 2: Convert to fraction form
    13,704.80/18,912.56 = 7,417.12/x
  3. Step 3: Cross multiply
    13,704.80x = 18,912.56 × 7,417.12
  4. Step 4: Simplify right side
    13,704.80x = 140,276,727.03
  5. Step 5: Solve for x
    x = 140,276,727.03/13,704.80
  6. Step 6: Final answer
    x = 10,235.59

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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.