Home / 13,128.30-19,704.60-6,559.20

Finding the Fourth Proportional to 13,128.30, 19,704.60 and 6,559.20

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Solution

The fourth proportional to 13,128.30, 19,704.60 and 6,559.20 is: 9,844.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.30 : 19,704.60 = 6,559.20 : x
  2. Step 2: Convert to fraction form
    13,128.30/19,704.60 = 6,559.20/x
  3. Step 3: Cross multiply
    13,128.30x = 19,704.60 × 6,559.20
  4. Step 4: Simplify right side
    13,128.30x = 129,246,412.32
  5. Step 5: Solve for x
    x = 129,246,412.32/13,128.30
  6. Step 6: Final answer
    x = 9,844.87

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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.